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Journal articles on the topic 'Gamow-Teller transition'

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Published: 4 June 2021

Last updated: 10 February 2022

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1

Auerbach, Naftali, and Minh-Loc Bui. "Study of the double Gamow-Teller transitions using the shell model approach." EPJ Web of Conferences 194 (2018): 02003. http://dx.doi.org/10.1051/epjconf/201819402003.

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The double Gamow-Teller strength distributions in the lightest double beta-decay candidate 48Ca and its isotope 46Ca were calculated using the nuclear shell model by applying the single Gamow-Teller operator two times sequentially on the ground state of parent nucleus. The nuclear matrix element of the double Gamow- Teller transition from the ground state to the ground state that goes into the double beta decay calculation was shown as a small fraction of the total transition.

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2

QI, C., and F. R. XU. "ISOSPIN SYMMETRY AND GAMOW TELLER TRANSITION STRENGTHS IN MIRROR NUCLEI." International Journal of Modern Physics E 15, no. 07 (October 2006): 1563–68. http://dx.doi.org/10.1142/s0218301306005149.

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We have calculated the strength functions of the Gamow-Teller transition processes from mirror pairs 46 Ti –46 Cr and 50 Cr –50 Fe to the odd-odd N = Z nuclei 46 V and 50 Mn . The calculations are carried out in fp model space with shell model diagonalization method. Calculations are compared with experimental observations. We have also discussed the effects of isospin symmetry breaking on the analogous transitions.

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3

Obaid, S. M., and H. M. Tawfeek. "Gamow-Teller strengths of some sd-shell nuclei in the shell model framework." Revista Mexicana de Física 66, no. 3 May-Jun (May 1, 2020): 330. http://dx.doi.org/10.31349/revmexfis.66.330.

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The nuclear Gamow-Teller (GT) transition strength distributions B(GT)have been studied for some sd-shell nuclei in the (3He, t) charge-exchangereactions. The shell model calculations were performed by employing theUSDA and USDB effective interactions in the sd-model space. The results of B(GT) calculations reproduce the the experimental Gamow-Tellerstrength distributions well, while the calculated distribution of summedGT transition strengths were closely reproduce the observed ones.

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4

Kumar, V., P. C. Srivastava, and A. Kumar. "Gamow–Teller Transition Strengths for Selected \({fp}\) Shell Nuclei." Acta Physica Polonica B 51, no. 4 (2020): 961. http://dx.doi.org/10.5506/aphyspolb.51.961.

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5

Bloom, S. D., G. J. Mathews, and J. A. Becker. "Gamow–Teller strength function for 90Zr(n,p)90Y." Canadian Journal of Physics 65, no. 6 (June 1, 1987): 684–86. http://dx.doi.org/10.1139/p87-098.

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The Gamow–Teller (GT) strength function for90Zr → 90Y has been calculated in a model space including two-particle two-hole excitations from the 2p shell to the 1g9/2 shell. Our purpose here is to eventually compare this with the latest results from the 90Zr(n,p)90Y TRIUMF experiment at 0°, which should be available soon. Our calculations (as a function of the amount of ground-state correlations) predict rather similar shapes and regions of excitation but grossly different magnitudes for the total GT strength. In the case of 90Zr → 90Y, the GT transition is forbidden in zero order. Therefore, ground-state correlations must be well understood before the degree and sources for Gamow–Teller quenching can be known.

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6

Suzuki, Toshio, Takashi Yoshida, Michio Honma, Hélène Mao, Takaharu Otsuka, and Toshitaka Kajino. "Gamow-Teller and First-Forbidden Transition Strengths in Astrophysical Processes." Journal of Physics: Conference Series 312, no. 4 (September 23, 2011): 042023. http://dx.doi.org/10.1088/1742-6596/312/4/042023.

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7

Suzuki, Toshio, and Takaharu Otsuka. "Configuration of the two-neutron halo ofLi11and Gamow-Teller transition." Physical Review C 50, no. 2 (August 1, 1994): R555—R558. http://dx.doi.org/10.1103/physrevc.50.r555.

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8

Simpson, J. J. "Half-life of tritium and the Gamow-Teller transition rate." Physical Review C 35, no. 2 (February 1, 1987): 752–54. http://dx.doi.org/10.1103/physrevc.35.752.

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9

KURASAWA, HARUKI, and TOSHIO SUZUKI. "GAMOW–TELLER SUM RULE IN RELATIVISTIC NUCLEAR MODELS." Modern Physics Letters A 21, no. 12 (April 20, 2006): 935–46. http://dx.doi.org/10.1142/s0217732306020391.

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Relativistic corrections are investigated to the Gamow–Teller (GT) sum rule with respect to the difference between the β- and β+ transition strengths in nuclei. Since the sum rule requires the complete set of the nuclear states, the relativistic corrections come from the anti-nucleon degrees of freedom. In the relativistic mean field approximation, the total GT strengths carried by the nucleon sector is quenched by about 12% in nuclear matter, while by about 8% in finite nuclei, compared to the sum rule value. The coupling between the particle-hole states with the nucleon–antinucleon states is also discussed with the relativistic random phase approximation, where the divergence of the response function is renormalized with use of the counterterms in the Lagrangian. It is shown that the approximation to neglect the divergence, like the no-sea approximation extensively used so far, is unphysical, from the sum-rule point of view.

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10

Win, Kalayar, Yoshitaka Fujita, Yee Yeeoo, and Hiro Fujita. "Analysis of high energy resolution data of 26Mg(3He,t)26Al reaction." EPJ Web of Conferences 206 (2019): 08003. http://dx.doi.org/10.1051/epjconf/201920608003.

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The Gamow-Teller (GT) transition is a powerful tool to study nuclear structure because of its simple form of the operator στ. The structure of 26Al is studied through Gamow-Teller transitions using nuclear charge-exchange reaction. The reaction 26Mg(3He,t)26Al was performed at an incident energy of 140 MeV/nucleon and scattering angle at and near 0˚. The energy resolution of ΔE = 22 keV allowed us to study many discrete states. Most of the prominent states are suggested that they are excited with ΔL = 0 GT transitions. The GT states were studied up to 18.5 MeV. For the extraction of the B(GT) value, the proportionality between cross section and B(GT) was used. The standard B(GT) values were obtained from the 26Si beta decay, where the mirror symmetry of B(GT) was obtained. The T = 2 GT states are expected in the region Ex ≥ 13.5 MeV. By comparing with the results of 26Mg(t, 3He)26Na reactions, the isospin symmetry of T = 2 GT states is discussed. Due to the high-energy resolution, the decay widths Γ for the states in the Ex > 9 MeV region could be studied. The narrow width of the T = 2 states at 13.592 MeV is explained in terms of isospin selection rules.

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11

Peräjärvi, K., P. Dendooven, M. Górska, J. Huikari, A. Jokinen, V. S. Kolhinen, M. La Commara, et al. "The 1+→0+ Gamow–Teller strength of the 58Cug.s.→58Nig.s. transition." Nuclear Physics A 696, no. 3-4 (December 2001): 233–40. http://dx.doi.org/10.1016/s0375-9474(01)01137-x.

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12

Auerbach, N. "Significance of theFe54(n,p) measurement of the Gamow-Teller transition." Physical Review C 36, no. 6 (December 1, 1987): 2694–96. http://dx.doi.org/10.1103/physrevc.36.2694.

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13

Zhi, Qi-Jun, Yan Yu, and Qiang Zheng. "Theoretical investigation of the Gamow-Teller transition across N =40 shell." Chinese Physics C 35, no. 11 (November 2011): 1022–25. http://dx.doi.org/10.1088/1674-1137/35/11/008.

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14

Kerrouchi, S., N. H. Allal, M. Fellah, and M. R. Oudih. "Evaluation of the β+ decay log ft value with inclusion of the neutron–proton pairing and particle number conservation." International Journal of Modern Physics E 24, no. 02 (February 2015): 1550014. http://dx.doi.org/10.1142/s0218301315500147.

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The particle number fluctuation effects, which are inherent to the Bardeen–Cooper–Schrieffer (BCS) theory, on the beta decay log ft values are studied in the isovector case. Expressions of the transition probabilities, of Fermi as well as Gamow–Teller types, which strictly conserve the particle number are established using a projection method. The probabilities are calculated for some transitions of isobars such as N ≃ Z. The obtained results are compared to values obtained before the projection. The nuclear deformation effect on the log ft values is also studied.

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15

Sagawa, Hiroyuki. "Single and Double Charge Exchange Excitations of Spin-Isospin Mode." EPJ Web of Conferences 223 (2019): 01053. http://dx.doi.org/10.1051/epjconf/201922301053.

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We study the sum rules of double Gamow-Teller (DGT) excitations through double spin-isospin operator (σt)2 In general, 2+states in the granddaughter nuclei have dominant transition strength in DGT excitations and 0+states are weak, except in T = 1 mother nuclei in which 0+strength is competitive with 2+strength. A possibility to extract the unit cross section for the DGT transition strength is pointed out in the (#x03C3;t)2 excitation of double isobaric analog state (DIAS) in T = 1 nuclei.

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16

Cakmak, Sadiye, Jameel-Un Nabi, and Tahsin Babacan. "Investigation of Gamow Teller transition properties in 56–64Ni isotopes using QRPA methods." Nuclear Physics A 970 (February 2018): 86–106. http://dx.doi.org/10.1016/j.nuclphysa.2017.11.006.

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17

Ünlü, S. "The study of Gamow-Teller transition strength for some Fe and Ni isotopes." Physics of Atomic Nuclei 75, no. 8 (August 2012): 958–62. http://dx.doi.org/10.1134/s106377881208011x.

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18

SAKAI, HIDE, KENTARO YAKO, and ICHOR COLLABORATION. "GT± STRENGTH DISTRIBUTION IN 48Sc AND 116In MEASURED BY (p, n) AND (n, p) REACTIONS AT 300 MeV AND THEIR IMPLICATIONS FOR 2ν2β DECAY." International Journal of Modern Physics E 18, no. 10 (November 2009): 2119–23. http://dx.doi.org/10.1142/s0218301309014408.

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Angular distributions of the double differential cross sections for the 48 Ca , 116 Cd (p, n) and the 48 Ti , 116 Sn (n, p) reactions were measured at 300 MeV. A multipole decomposition technique was applied to the spectra to extract the Gamow-Teller (GT) transition strengths. In both (n, p) spectra beyond 8 MeV excitation energy extra B( GT +) strengths which are not predicted by either shell model or QRPA calculations. This extra B( GT +) strengths certainly contribute to the nuclear matrix element of the 2ν2β-decay.

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19

Suzuki, Toshio, H. Sagawa, and Nguyen Van Giai. "Possible enhancement of magnetic dipole transition strength between Gamow-Teller and isobaric analog states." Nuclear Physics A 599, no. 1-2 (March 1996): 153–58. http://dx.doi.org/10.1016/0375-9474(96)00057-7.

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20

Kutschera, Walter. "The Half-Life of 14C—Why Is It So Long?" Radiocarbon 61, no. 5 (April 15, 2019): 1135–42. http://dx.doi.org/10.1017/rdc.2019.26.

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ABSTRACTThe half-life of radiocarbon (14C) is 5700 ± 30 yr, which makes it particularly useful for dating in archaeology. However, only an exceptional hindrance of the beta decay from 14C to 14N—a so-called Gamow-Teller ß-decay—makes this half-life so long. A normal strength would result in a half-life of only a few days, completely useless for archaeological dating. The unusual hindrance is based on the nuclear structure of the two nuclei, resulting in strongly destructive interferences of the nuclear transition matrix element. Nuclear model calculation with great computational efforts have been performed in the literature to reproduce the very low transition probability. Here, we will attempt to describe the nuclear physics behind this most unusual half-life.

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21

Fuyuki, M. "Gamow-Teller Beta Transition between Collective and Single-Particle States in Spherical Odd-Mass Nuclei." Progress of Theoretical Physics Supplement 60 (May 14, 2013): 56–62. http://dx.doi.org/10.1143/ptp.60.56.

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22

Watson, J. W., W. Pairsuwan, B. D. Anderson, A. R. Baldwin, B. S. Flanders, R. Madey, R. J. McCarthy, B. A. Brown, B. H. Wildenthal, and C. C. Foster. "Relationship between Gamow-Teller Transition Probabilities and (p, n) Cross Sections at Small Momentum Transfers." Physical Review Letters 55, no. 13 (September 23, 1985): 1369–72. http://dx.doi.org/10.1103/physrevlett.55.1369.

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23

Khai, Nguyen Tuan, Bui Duy Linh, Tran Duc Thiep, Y. Fujita, T. Adachi, H. Fujita, and A. Tamii. "Determination of GT-transition Strengths in \(A=34\) Isobars Using Charge Exchange \((^3\text{He},t)\) Reaction." Communications in Physics 22, no. 1 (May 7, 2012): 91–96. http://dx.doi.org/10.15625/0868-3166/22/1/175.

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Under the assumption that isospin \(T\) is a good quantum number, mirror transitions \(T_{z }= +1 \to 0\) and \(T_{z }= -1 \to 0\) were studied in \(A = 34\) isobars, where \(T_{z}\) is \(z\) component of iospin \(T\) and is defined by \(T_{z} = (N-Z)/2\). With a high energy resolution of 35 keV in \(^{34}\)S\((^{3}He,t)^{34}\)Cl reaction measurement at \(0^{\circ}\) scattering angle and at an incident energy of 140 MeV/nucleon, strengths of Fermi and Gamow-Teller (GT) transitions from the \(J^{\pi } = 0^{ + }\), \(T_{z }= +1\) ground state of \(^{34}\)S to the \(J^{\pi } = 1^{+ }\), \(T_{z }= 0\) excited states in \(^{34}\)Cl were determined up to excitation energy \((E_{x})\) of \(7.08\) MeV. The corresponding isospin-symmetric transitions connecting \(T_{z }= -1\) and \(T_{z }= 0\) states can be studied in the \(^{34}\)Ar \(\beta ^{ + }\) decay. The strengths of the \((GT)_{\pm }\) transitions were compared up to the excitation energy of 3.1 MeV. A good agreement was observed for two strong transitions to \(2.580\) MeV and \(3.129\) MeV states, while a disagreement about \(45\text{%}\) was observed for a weaker transition to \(0.666\) MeV low-lying state.

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24

SHIMBARA, Y., Y. FUJITA, T. ADACHI, G. P. A. BERG, B. A. BROWN, H. FUJIMURA, H. FUJITA, et al. "ISOSPIN SYMMETRY OF Tz = ±3/2 → ±1/2 GAMOW-TELLER TRANSITIONS IN A = 37 AND A = 41 NUCLEI." Modern Physics Letters A 25, no. 21n23 (July 30, 2010): 1976–79. http://dx.doi.org/10.1142/s0217732310000782.

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Under the assumption of good isospin symmetry, Tz = ±3/2 → ±1/2 Gamow-Teller (GT) transitions in a mass A isobar are analogous, where Tz is the z component of isospin T defined by 1/2(N - Z). We studied the Tz = +3/2 → +1/2 GT transitions by using the 37 Cl (3 He ,t)37 Ar and 41 K (3 He ,t)41 Ca reactions at E beam = 140 MeV / nucleon . The GT transition strengths in 37 Ar and 41 Ca were obtained up to the excitation energy (Ex) of 14.2 MeV and 10.4 MeV with energy resolutions of 30 and 35 keV, respectively. The obtained GT strengths were compared with those of the Tz = -2/3 → -1/2 mirror transitions, measured by the β-decay of 37 Ca and 41 Ti , respectively. It was found that the overall distributions of the mirror transitions were similar in both A = 37 and A = 41 systems. In A = 37 the differences seen at lower excitation energies are suggested to be the effect of the tensor interaction in the charge-exchange reaction. The differences seen at higher excitation energies are suggested to be the effect of the Coulomb interaction that can break the mirror symmetry of the strength distributions.

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25

Fujita, Yoshitaka, Hirohiko Fujita, and Yusuke Tanumura. "Analogous Gamow-Teller and M1 Transitions in Tz = ±½ Mirror Nuclei and in Tz = ±1, 0 Triplet Nuclei relevant to Low-energy Super GT state." EPJ Web of Conferences 178 (2018): 05001. http://dx.doi.org/10.1051/epjconf/201817805001.

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Nuclei have spin- and isospin-degrees of freedom. Therefore, Gamow-Teller (GT) transitions caused by the στ operator (spin-isospin operator) are unique tools for the studies of nuclear structure as well as nuclear interactions. They can be studied in β decays as well as charge-exchange (CE) reactions. Similarly, M1 γ decays are mainly caused by the στ operator. Combined studies of these transitions caused by Weak, Strong, and Electro-Magnetic interactions provide us a deeper understanding of nuclear spin-isospin-type transitions. We first compare the strengths of analogous GT and M1 transitions in the A = 27, Tz = ±½ mirror nuclei 27Al and 27Si. The comparison is extended to the Tz = ±1, 0 nuclei. The strength of GT transition from the ground state (g.s.) of 42Ca to the 0.611 MeV first Jπ = 1+ state in 42Sc is compared with that of the analogous M1 transition from the 0.611 MeV state to the T = 1, 0+ g.s. (isobaric analog state: IAS) in 42Sc. The 0.611 MeV state has the property of Low-energy Super GT (LeSGT) state, because it carries the main part of the GT strength of all available transitions from the g.s. of 42Ca (and 42Ti) to the Jπ = 1+ GT states in 42Sc.

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26

Carranza M., A., S. Pittel, and Jorge G. Hirsch. "Influence of pairing and deformation on charge exchange transitions." Revista Mexicana de Física 66, no. 6 Nov-Dec (November 5, 2020): 710. http://dx.doi.org/10.31349/revmexfis.66.710.

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We describe the importance of charge-exchange reactions, and in particular Gamow-Teller transitions, first to astrophysical processes and double beta decay, and then to the understanding of nuclear structure. In our review of their role in nuclear structure we first provide an overview of some of the key steps in the emergence of our current understanding of the structure of nuclei, including the central role played by the isovector pairing and the quadrupole-quadrupole channels in the description of energy spectra and in the manifestation of collective modes, some associated with deformation of the nuclear shape. We then turned our focus to Gamow-Teller (GT) tran- sitions in relatively light nuclei, especially in the 2p1f shell, where isoscalar pairing may be playing a role in competition with the isovector pairing that dominates in heavier regions. Following a summary of the progress made in recent years on this subject, we report a systematic shell model study aimed at providing further clarification as to how these pairing modes compete. In this study, we use a schematic Hamiltonian that contains a quadrupole- quadrupole interaction as well as both isoscalar and isovector pairing interac- tions. We first find an optimal set of Hamiltonian parameters for the model, to provide a starting point from which to vary the relevant pairing strengths and thus assess how this impacts the behavior of GT transitions and the corresponding energy spectra and rotational properties of the various nuclei involved in the decays. The analysis includes as an important theme a com- parison with experimental data. The need to suppress the isoscalar pairing mode when treating nuclei with a neutron excess to avoid producing spurious results for the ground state spin and parity with the simplified Hamiltonian is highlighted. Varying the strength parameters for the two pairing modes is found to exhibit different but systematic effects on GT transition properties and on the corresponding energy spectra, which are detailed.

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27

Majid, Muhammad, Jameel-Un Nabi, and Muhammad Riaz. "Study of Gamow–Teller strength and associated weak-rates on odd-A nuclei in stellar matter." International Journal of Modern Physics E 27, no. 03 (March 2018): 1850019. http://dx.doi.org/10.1142/s0218301318500192.

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In a recent study by Cole et al. [A. L. Cole et al., Phys. Rev. C 86 (2012) 015809], it was concluded that quasi-particle random phase approximation (QRPA) calculations show larger deviations and overestimate the total experimental Gamow–Teller (GT) strength. It was also concluded that QRPA calculated electron capture rates exhibit larger deviation than those derived from the measured GT strength distributions. The main purpose of this study is to probe the findings of the Cole et al. paper. This study gives useful information on the performance of QRPA-based nuclear models. As per simulation results, the capturing of electrons that occur on medium heavy isotopes have a significant role in decreasing the ratio of electron-to-baryon content of the stellar interior during the late stages of core evolution. We report the calculation of allowed charge-changing transitions strength for odd-[Formula: see text] [Formula: see text]-shell nuclei ([Formula: see text]Sc and [Formula: see text]Mn) by employing the deformed pn-QRPA approach. The computed GT transition strength is compared with previous theoretical calculations and measured data. For stellar applications, the corresponding electron capture rates are computed and compared with rates using previously calculated and measured GT values. Our finding shows that our calculated results are in decent accordance with measured data. At higher stellar temperature, our calculated electron capture rates are larger than those calculated by independent particle model (IPM) and shell model. It was further concluded that at low temperature and high density regions, the positron emission weak-rates from [Formula: see text]Sc and [Formula: see text]Mn may be neglected in simulation codes.

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28

Taddeucci, T. N., R. C. Byrd, T. A. Carey, D. E. Ciskowski, C. C. Foster, C. Gaarde, C. D. Goodman, et al. "Gamow-Teller transition strengths from theB11(p,n)11C reaction in the energy range 160–795 MeV." Physical Review C 42, no. 3 (September 1, 1990): 935–46. http://dx.doi.org/10.1103/physrevc.42.935.

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29

Gargano, Angela, Luigi Coraggio, Luca De Angelis, Tokuro Fukui, and Nunzio Itaco. "Realistic shell model description of beta decay." EPJ Web of Conferences 194 (2018): 02007. http://dx.doi.org/10.1051/epjconf/201819402007.

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In this paper, we extend our previous realistic shell-model study of Gamow-Teller strengths and double-β decay properties for nuclei around 132Sn to lighter mass nuclei. The effective shell-model Hamiltonian and transition operators are microscopically derived by way of many-body perturbation theory, without resorting to empirical parameters. Our main aim is to further check the reliability of our approach and verify its stability in other mass regions. Calculated energy spectra as well as electric-quadrupole and β-decay properties are presented for 76Ge and 82Se and compared with the experimental data, together with some results for 130Te and 136Xe already reported in our previous paper. Finally, some preliminary results of nuclear matrix elements responsible for the neutrinoless double beta decay, calculated by using the bare operator, are shown.

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30

Jing-Jing, Liu, and Luo Zhi-Quan. "Effect of Strong Magnetic Field on Gamow–Teller Transition Electron Capture of Iron Group Nuclei at Crusts of Neutron Stars." Communications in Theoretical Physics 49, no. 1 (January 2008): 239–42. http://dx.doi.org/10.1088/0253-6102/49/1/50.

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31

Ray, A., T. Kar, S. Sarkar, and S. Chakravarti. "Nuclear Weak Processes in Presupernova Stars." International Astronomical Union Colloquium 145 (1996): 165–72. http://dx.doi.org/10.1017/s0252921100008034.

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The structure and the size of the core of massive presupernova stars are determined by the electron fraction and entropy of the core during its late stages of evolution; these in turn affect the subsequent evolution during gravitational collapse and supernova explosion phases. Beta decay and electron capture on a number of neutron rich nuclei can contribute substantially towards the reduction of the entropy and possibly the electron fraction in the core. Methods for calculating the weak transition rates for a number of nuclei for which no reliable rates exist (particularly for A > 60) are outlined. The calculations are particularly suited for presupernova matter density (p = 107 - 109 g/cc) and temperature (T = 2 - 6 × 109 °K). We include besides the contributions from the ground state and the known excited states, the Gamow-Teller (GT) resonance states (e.g. for beta decay rates, the GT+ states) in the mother nucleus which are populated thermally. For the GT strength function for transitions from the ground state (as well as excited states) we use a sum rule calculated by the spectral distribution method where the centroid of the distribution is obtained from experimental data on (p,n) reactions. The contribution of the excited levels and GT+ resonances turn out to be important at high temperatures which may prevail in presupernova stellar cores.

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32

Suzuki, Toshio, and Takaharu Otsuka. "Gamow-Teller transitions from11Liand12Be." Physical Review C 56, no. 2 (August 1, 1997): 847–56. http://dx.doi.org/10.1103/physrevc.56.847.

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33

Fujita, Y. "Detailed study of Gamow-Teller transitions." Nuclear Physics A 805, no. 1-4 (June 2008): 408c—415c. http://dx.doi.org/10.1016/j.nuclphysa.2008.02.281.

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34

Rapaport, J. "On the quenching of Gamow–Teller strength." Canadian Journal of Physics 65, no. 6 (June 1, 1987): 574–77. http://dx.doi.org/10.1139/p87-081.

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The (p, n) reaction at intermediate energies has been used to measure differential cross sections in light nuclei to final states characterized with a ΔJπ = 1+ transfer (Gamow–Teller (GT) states). Experimental ft values for allowed beta-decay transitions in these nuclei are used to normalize the strength of the GT transitions in units of B(GT). This experimental GT strength is compared with predicted shell–model strength. For p-shell nuclei, the calculated excitation energies of the GT strength using Cohen and Kurath wave functions are in general agreement with the empirical GT distribution. Up to an excitation energy of about 20 MeV, the total experimental and calculated GT strengths are used to obtain the quenching factor, QF = Σ B(GT)exp/Σ B(GT)theor. It is found that QF decreases as the shell gets filled-up. The lowest value seems to occur for single-hole nuclei. This decrease may be explained by configuration mixing not specifically included in the calculations.

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35

Suzuki, Toshio. "Gamow-Teller and magnetic dipole transitions for , and." Journal of Physics G: Nuclear and Particle Physics 24, no. 8 (August 1, 1998): 1455–60. http://dx.doi.org/10.1088/0954-3899/24/8/020.

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36

Çakmak, N., S. Ünlü, and C. Selam. "Low-lying Gamow-Teller transitions in spherical nuclei." Physics of Atomic Nuclei 75, no. 1 (January 2012): 8–16. http://dx.doi.org/10.1134/s106377881201005x.

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37

Suzuki, Toshio, and Takaharu Otsuka. "Halo Structure of11Li and Gamow-Teller Transitions to11Be." Progress of Theoretical Physics Supplement 124 (1996): 155–62. http://dx.doi.org/10.1143/ptps.124.155.

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38

Zamick, L., and D. C. Zheng. "Relations between Gamow-Teller and magnetic dipole transitions." Physical Review C 37, no. 4 (April 1, 1988): 1675–80. http://dx.doi.org/10.1103/physrevc.37.1675.

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Rykaczewski, K., I. S. Grant, R. Kirchner, O. Klepper, V. T. Koslowsky, P. O. Larsson, E. Nolte, et al. "The Gamow-Teller transitions in the96Pd→96Rh decay." Zeitschrift für Physik A Atoms and Nuclei 322, no. 2 (June 1985): 263–70. http://dx.doi.org/10.1007/bf01411890.

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Sasano, Masaki, Hideyuki Sakai, Kentaro Yako, Hironori Kuboki, Kenjiro Miki, Shumpei Noji, Tomotsugu Wakasa, et al. "Determination of the Gamow-Teller transition strength to 116In(g.s.) by the 116Cd(p,n) reaction at 300 MeV for the study of the nuclear matrix element of the two-neutrino double beta decay." Nuclear Physics A 788, no. 1-4 (May 2007): 76–81. http://dx.doi.org/10.1016/j.nuclphysa.2007.01.051.

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41

FUJITA, Y., T. ADACHI, H. FUJITA, Y. SHIMBARA, RCNP High Resolution ³He, t collabo, B. RUBIO, W. GELLETLY, F. MOLINA, and Valencia, Surrey, Osaka, GSI, Istan. "Tz = ±1 → 0 ISOSPIN SYMMETRY GAMOW-TELLER TRANSITIONS IN pf-SHELL NUCLEI." Modern Physics Letters A 25, no. 21n23 (July 30, 2010): 2003–5. http://dx.doi.org/10.1142/s0217732310000861.

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Studying the Gamow-Teller (GT) transitions of stable as well as unstable pf-shell nuclei is one of the key issues in nuclear and astro-nuclear physics. Under the assumption that isospin T is a good quantum number, symmetry is expected for mirror nuclei and the GT transitions starting from the mirror nuclei. We study the GT transitions starting from Tz = ±1 mirror nuclei, respectively, by means of hadronic (3 He , t) charge-exchange reactions and complementary β decays.

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Van Isacker, P., and A. O. Macchiavelli. "Gamow–Teller transitions and neutron–proton-pair transfer reactions." Physics Letters B 780 (May 2018): 414–17. http://dx.doi.org/10.1016/j.physletb.2018.03.034.

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Fujita, Yoshitaka. "New facet in the study of Gamow–Teller transitions." Journal of Physics: Conference Series 20 (January 1, 2005): 107–12. http://dx.doi.org/10.1088/1742-6596/20/1/018.

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Popescu, L., T. Adachi, G. P. A. Berg, P. von Brentano, D. De Frenne, K. Fujita, Y. Fujita, et al. "Gamow–Teller transitions in the64Ni(3He,t)64Cu reaction." Journal of Physics G: Nuclear and Particle Physics 31, no. 10 (September 12, 2005): S1945—S1948. http://dx.doi.org/10.1088/0954-3899/31/10/107.

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Zuber, K., C. F. Liang, P. Paris, J. Styczen, J. Zuber, P. Kleinheinz, B. Rubio, et al. "Gamow-teller transitions in ?-decay of 66 146 Dy80." Zeitschrift f�r Physik A Atomic Nuclei 327, no. 3 (September 1987): 357–58. http://dx.doi.org/10.1007/bf01284460.

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Kar, Kamales, Sukhendusekhar Sarkar, Srubabati Goswami, and Amitava Raychaudhuri. "Excited States of 71Ge above the Neutron Emission Threshold and Solar Neutrino Capture Rates for Ga Detectors." Modern Physics Letters A 12, no. 30 (September 28, 1997): 2279–85. http://dx.doi.org/10.1142/s0217732397002351.

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In Gallium detectors for solar neutrinos, the capture rate due to Gamow–Teller transitions to excited states of 71Ge beyond the neutron emission threshold is usually neglected. We make a model calculation to estimate its effect and find that this yields an additional contribution which may be as much as 0.4 SNU, even larger than that from the Isobaric Analog State in 71 Ge reached by Fermi transitions, which is normally included in the standard predictions.

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Häusser, O. "Gamow–Teller strength functions from scattering experiments." Canadian Journal of Physics 65, no. 6 (June 1, 1987): 691–98. http://dx.doi.org/10.1139/p87-100.

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We present here recent [Formula: see text] results from TRIUMF that are relevant to the determination of spin-flip isovector strength functions in nuclei. Distortion factors needed for the extraction of nuclear-structure information have been deduced from cross sections and analyzing powers in elastic scattering for several energies and targets. Nonrelativistic optical potentials obtained by folding effective nucleon (N)–nucleus interactions with nuclear densities are found to overpredict both elastic and reaction cross sections, whereas Dirac calculations that include Pauli blocking are in good agreement with the data. Spin observables (Snn and Ay) for the quasi-elastic region in 54Fe[Formula: see text] at 290 MeV provide some evidence for the reduction of the effective proton mass predicted in relativistic mean-field theories as a consequence of the attractive scalar field in the nuclear medium. The energy dependence of the effective N–nucleus interaction at small momentum transfers has been investigated using isoscalar and isovector 1+ states in 28Si as probe states. We find that the cross sections for the isovector transitions are in good agreement with predictions for the dominant Vστ part of the Franey–Love interaction. Gamow–Teller (GT) strength functions have been obtained in 24Mg and 54Fe from measurements of both cross sections and spin–flip probabilities Snn. The spin-flip cross sections σSnn are particularly useful in heavier nuclei to discriminate against a continuous background of ΔS = 0 excitations. In the (s, d) shell where full shell-model wave functions are available, the GT quenching factors [Formula: see text] are in good agreement with those from recent (p, n) and (n, p) experiments. We show that a state-by-state comparison of (p, p′) and (e, e′) results has the potential of identifying pionic current contributions in (e, e′). The GT quenching factors in 54Fe are smaller than in the (s, d) shell probably because of severely truncated shell-model wave functions, particularly those of the nuclear ground state.

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Razumovskii, K. A., S. Yu Igashov, and M. G. Urin. "On M1-radiative transitions between analog and Gamow-Teller states." Bulletin of the Russian Academy of Sciences: Physics 73, no. 6 (June 2009): 863–66. http://dx.doi.org/10.3103/s1062873809060343.

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Pittel, S., A. Carranza M., and J. G. Hirsch. "Neutron-Proton Pairing and its Impact on Gamow-Teller Transitions." Journal of Physics: Conference Series 1610 (September 2020): 012012. http://dx.doi.org/10.1088/1742-6596/1610/1/012012.

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Fujita, Y., H. Fujita, T. Adachi, G. P. A. Berg, E. Caurier, H. Fujimura, K. Hara, et al. "Gamow-Teller transitions from 58Ni to discrete states of 58Cu." European Physical Journal A 13, no. 4 (April 2002): 411–18. http://dx.doi.org/10.1140/epja/iepja1344.

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