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Zeitschriftenartikel zum Thema „Trapped magnetic fields“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Weinstein, R., In‐Gann Chen, J. Liu, D. Parks, V. Selvamanickam, and K. Salama. "Persistent magnetic fields trapped in highTcsuperconductor." Applied Physics Letters 56, no. 15 (1990): 1475–77. http://dx.doi.org/10.1063/1.103207.

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2

Frangi, F., L. Jansak, M. Majoros, and S. Zannella. "Trapped magnetic fields in melt-textured YBCO." Physica C: Superconductivity 224, no. 1-2 (1994): 20–30. http://dx.doi.org/10.1016/0921-4534(94)90600-9.

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3

Lyuksyutov, I. F., A. Lyuksyutova, D. G. Naugle, and K. D. D. Rathnayaka. "Trapping Microparticles with Strongly Inhomogeneous Magnetic Fields." Modern Physics Letters B 17, no. 17 (2003): 935–40. http://dx.doi.org/10.1142/s0217984903005974.

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By using micron size permanent magnets we have trapped directly single diamagnetic micron size polystyrene microspheres inside a buffer solution with a magnetic field and demonstrated self-assembly of several hundred microns long chains of microspheres in magnetic traps.

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4

Treimer, Wolfgang, Tobias Junginger, and Oliver Kugeler. "Study of Possible Frequency Dependence of Small AC Fields on Magnetic Flux Trapping in Niobium by Polarized Neutron Imaging." Applied Sciences 11, no. 14 (2021): 6308. http://dx.doi.org/10.3390/app11146308.

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Reducing the size of ambient magnetic flux trapping during cooldown in superconducting radio-frequency niobium cavities is essential to reaching the lowest power dissipation as required for continuous wave application. Here, it is suggested that applying an alternating magnetic field superimposed to the external DC field can potentially reduce the size of trapped flux by supporting flux line movement. This hypothesis is tested for the first time systematically on a buffered chemically polished (BCP) niobium sample before and after high temperature annealing, a procedure which is known to reduc

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5

Rostami, Kh R., V. V. Mantorov, and V. I. Omel’chenko. "Spatial distribution of trapped magnetic field in cylindrical HTS samples." Low Temperature Physics 22, no. 7 (1996): 565–69. https://doi.org/10.1063/10.0034051.

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The “evolution” of the magnetic field trapped by Y−Ba−Cu−O ceramics from very weak to strong external magnetic fields is demonstrated for the first time. It is shown that a consideration of the spatial distribution of the trapped magnetic field is essential while choosing models that correctly describe the residual magnetization of the Y−Ba−Cu−O ceramics in a wide range of external magnetic fields. It is found that in low fields H0⩽50 Oe, the magnetization is described quantitatively by Bean’s model quite correctly, while the model of uniform magnetization is applicable in fields H0⩾1 kOe. A s

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6

Wang, Ying, Ruige Wu, Vijaykumar B. Varma, et al. "Flowing label-free bacteria trapped by small magnetic fields." Sensors and Actuators B: Chemical 260 (May 2018): 657–65. http://dx.doi.org/10.1016/j.snb.2017.12.098.

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7

Barwood, G. P., P. Gill, G. Huang, H. A. Klein, and W. R. C. Rowley. "Studies of trapped strontium ions in low magnetic fields." Applied Physics B Laser and Optics 61, no. 4 (1995): 385–90. http://dx.doi.org/10.1007/bf01081539.

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8

Zou, Jin, Mark D. Ainslie, Di Hu, and David A. Cardwell. "Influence of Time-Varying External Magnetic Fields on Trapped Fields in Bulk Superconductors." IEEE Transactions on Applied Superconductivity 25, no. 3 (2015): 1–5. http://dx.doi.org/10.1109/tasc.2014.2379692.

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9

Lee, Sang-Heon. "Improvement of Electromagnetic Properties for Y_1.5Ba₂Cu₃O_7−y Superconducting Bulk." Journal of Nanoelectronics and Optoelectronics 19, no. 10 (2024): 1029–35. http://dx.doi.org/10.1166/jno.2024.3658.

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Creating perforations in bulk superconductors and infusing them with a conductive metallic medium enhances the thermal conductivity and mechanical properties of ceramic superconductors. In this study, the top-seeded melt growth (TSMG) technique was employed along with die pressing to fabricate single-grain YBCO bulk superconductors with engineered perforations. These perforations were introduced into YBCO powder compacts using a specially designed die, without hindering YBCO grain growth during the TSMG process. Subsequently, the YBCO bulk samples underwent oxygenation and cooling to 77 K thro

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10

Rabhi, Aziz, and Constança Providência. "Dense stellar matter with trapped neutrinos under strong magnetic fields." Journal of Physics G: Nuclear and Particle Physics 37, no. 7 (2010): 075102. http://dx.doi.org/10.1088/0954-3899/37/7/075102.

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11

Stoye, P., G. Fuchs, G. Krabbes, et al. "Melt textured YBCO: High trapped fields and superconducting magnetic bearings." Journal of Low Temperature Physics 105, no. 5-6 (1996): 1457–62. http://dx.doi.org/10.1007/bf00753905.

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12

Sofue, Yoshiaki, and Mitsuaki Fujimoto. "The Vertical Large-Scale Magnetic Fields in Spiral Galaxies." Publications of the Astronomical Society of Japan 39, no. 6 (1987): 843–48. https://doi.org/10.1093/pasj/39.6.843.

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Abstract A primordial-origin hypothesis is presented to explain a large-scale magnetic field vertically penetrating the galactic nuclear disk. Based on this hypothesis it is shown that a vertical component of a fossil of an intergalactic magnetic field trapped to a protogalaxy is condensed toward the galactic center through a secular accretion of the disk gas. The strong vertical field thus condensed in the nuclear disk may account for the vertical straight structures observed in our galactic center.

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13

Dawid, Anna, and Michał Tomza. "Magnetic properties and quench dynamics of two interacting ultracold molecules in a trap." Physical Chemistry Chemical Physics 22, no. 48 (2020): 28140–53. http://dx.doi.org/10.1039/d0cp05542e.

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14

Walter, H., M. P. Delamare, B. Bringmann, A. Leenders, and H. C. Freyhardt. "Melt-textured YBaCuO with High Trapped Fields up to 1.3 T at 77 K." Journal of Materials Research 15, no. 6 (2000): 1231–34. http://dx.doi.org/10.1557/jmr.2000.0175.

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CeO2-doped YBaCuO monoliths synthesized with a top-seeded melt growth process in a conventional box furnace exhibited values of trapped magnetic field of up to 1.33 T at 77 K. To our knowledge, this is the highest value of trapped field reported for a melt-textured YBaCuO monolith. A suitable temperature profile and the use of high-density Y2BaCuO5 substrates led to reproducible single-domain crack-free samples investigated by optical and scanning electron microscopy and trapped field measurements. The zero-field-cooled levitation forces at 77 K of standard samples amounted to 70–83 N. A trans

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15

Boerkamp, Martijn. "New ion-trap could help quantum computers to scale up." Physics World 37, no. 5 (2024): 6i. http://dx.doi.org/10.1088/2058-7058/37/05/06.

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Researchers have trapped ions with static magnetic and electric fields instead of an oscillating electromagnetic field, which could make it easier to use ions as building blocks for quantum computers.

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16

López-Barquero, Vanessa, and Paolo Desiati. "Chaotic Behavior of Trapped Cosmic Rays." Astrophysical Journal 983, no. 2 (2025): 106. https://doi.org/10.3847/1538-4357/adbca7.

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Abstract Recent experimental results on the arrival direction of high-energy cosmic rays have motivated studies to understand their propagating environment. The observed anisotropy is shaped by interstellar and local magnetic fields. In coherent magnetic structures, such as the heliosphere, or due to magnetohydrodynamic turbulence, magnetic mirroring can temporarily trap particles, leading to chaotic behavior. In this work, we develop a new method to characterize cosmic rays’ chaotic behavior in magnetic systems using finite-time Lyapunov exponents. This quantity determines the degree of chaos

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17

Thompson, Christopher. "Cosmic Magnetic Fields and Superconducting Strings." Symposium - International Astronomical Union 140 (1990): 507–12. http://dx.doi.org/10.1017/s0074180900191028.

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A cosmic magnetic field may play a significant role in the formation of galaxies and large scale structure. In particular, a fossil field of present strength ~ 10−9 Gauss is an essential ingredient in the superconducting string model of galaxy formation (Ostriker, Thompson and Witten 1986 (OTW); Thompson 1988a). We discuss the mechanism by which a current is induced on a superconducting string, including recent work on the reconnection of magnetic field lines near the string (Kulsrud and Thompson 1989). A substantial amount of baryonic plasma is trapped on the magnetic field lines which close

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18

Xie, Rui-Hua, and Paul Brumer. "Quantum Reflection of Ultracold Atoms in Magnetic Traps." Zeitschrift für Naturforschung A 54, no. 3-4 (1999): 167–70. http://dx.doi.org/10.1515/zna-1999-3-401.

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Ultracold neutral atoms can be trapped in spatially inhomogeneous magnetic fields. In this paper, we present a theoretical model and demonstrate by using Landau-Zener tool that if the magnetic resonant transition region is very narrow, "potential barriers" appear and quantum reflection of such ultracold atoms can be observed in this region.

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19

Fuchs, G., P. Schätzle, G. Krabbes, et al. "Trapped magnetic fields larger than 14 T in bulk YBa2Cu3O7−x." Applied Physics Letters 76, no. 15 (2000): 2107–9. http://dx.doi.org/10.1063/1.126278.

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20

Clem, T. "The temperature dependence of magnetic fields trapped axially inside superconducting solenoids." IEEE Transactions on Magnetics 23, no. 2 (1987): 1097–101. http://dx.doi.org/10.1109/tmag.1987.1064888.

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21

Dietzfelbinger, S. H., M. G. Richards, and K. Machin. "Homogeneity and time stability of magnetic fields trapped in superconducting cylinders." Cryogenics 30, no. 8 (1990): 693–96. http://dx.doi.org/10.1016/0011-2275(90)90232-2.

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22

LYUKSYUTOV, I. F. "NANOSCALE MAGNETIC TRAPS." Modern Physics Letters B 16, no. 15n16 (2002): 569–76. http://dx.doi.org/10.1142/s0217984902004081.

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We show that nanofabricated magnetic textures allow the trapping and manipulation of nanosize diamagnetic systems, such as carbon nanotubes, proteins and membranes as well as cold atoms. The latter can have temperatures as high as 1 K. Magnetic textures which can be used as traps, include films, dots and nanowires, both single and in arrays. Manipulation with trapped nanoparticles/atoms is possible by using external magnetic fields. We also briefly discuss prospects for magnetic traps at the micron scale.

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23

Yamagishi, K., D. Miyagi, and O. Tsukamoto. "Influence of High Harmonics of Magnetic Fields on Trapped Magnetic Fluxes in HTS Bulk." Physics Procedia 36 (2012): 1062–66. http://dx.doi.org/10.1016/j.phpro.2012.06.106.

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24

Suyama, Masahiro, Sunseng Pyon, Yasuhiro Iijima, Satoshi Awaji, and Tsuyoshi Tamegai. "Trapping a magnetic field of 17.89 T in stacked coated conductors by suppression of flux jumps." Superconductor Science and Technology 35, no. 2 (2022): 02LT01. http://dx.doi.org/10.1088/1361-6668/ac4560.

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Abstract We have successfully trapped a field of 17.89 T at 6.5 K at the center of a compact coated-conductor (CC) stacks (13 × 12 × 11.7 mm3) within 75 min by suppressing flux jumps. The CC stack consists of 200 sheets of EuBa2Cu3O7 CCs with BaHfO3 nanorods to increase the critical current density at high fields and low temperatures. To enhance thermomagnetic stability, the central 50 CCs are coated with 1 µm thick Pb with large specific heat at low temperatures. Numerical calculations based on the actual J c–H characteristics reproduces the trapped field quantitatively. New directions for ac

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25

Mawatari, Yasunori. "Anomalous magnetic interference of cross-type Josephson junctions exposed to oblique magnetic fields." Journal of Physics D: Applied Physics 55, no. 20 (2022): 200002. http://dx.doi.org/10.1088/1361-6463/ac52ce.

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Abstract Gauge-invariant phase difference and critical currents of cross-type Josephson junctions with thin and narrow superconducting strips exposed to three-dimensional magnetic fields are theoretically investigated. When a sandwich-type Josephson junction in the xy plane is exposed to parallel magnetic fields H x and H y , the phase difference linearly depends on the spatial coordinates, x and y, and the critical currents exhibit the standard Fraunhofer-type magnetic interference. The perpendicular field H z , on the other hand, nonlinearly modulates the distribution of the phase difference

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26

Kato, Shoji. "Trapped, Two-Armed, Nearly Vertical Oscillations in Disks with Toroidal Magnetic Fields." Publications of the Astronomical Society of Japan 63, no. 1 (2011): 125–36. http://dx.doi.org/10.1093/pasj/63.1.125.

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27

Kozlovskii, A. A., and V. F. Khirnyi. "Critical current, trapped magnetic fields, and ruptured vortices in HTSC ceramic samples." Physics of the Solid State 42, no. 10 (2000): 1825–31. http://dx.doi.org/10.1134/1.1318871.

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28

Nagashima, Ken, Noriki Hayashi, Sang-Im Yoo, Hiroyuki Fujimoto, and Masato Murakami. "Comparative study of magnetic fields trapped in YBa2Cu3Oy and SmBa2Cu3Oy, superconducting bulks." Materials Science and Engineering: B 53, no. 1-2 (1998): 164–68. http://dx.doi.org/10.1016/s0921-5107(97)00321-8.

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29

Timofeev, V. P., A. A. Shablo, and V. Yu Monarkha. "Dynamics of trapped magnetic fluxes in single-crystal YBCO in weak fields." Low Temperature Physics 35, no. 12 (2009): 926–29. http://dx.doi.org/10.1063/1.3272557.

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30

Zachariades, H. A. "Coulomb-trapped particles in the electromagnetic fields of an oblique magnetic rotator." Astrophysics and Space Science 176, no. 1 (1991): 105–21. http://dx.doi.org/10.1007/bf00643081.

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31

Zheng, Jun, Yan Feng Gou, Da Bo He, Rui Xue Sun, and Zi Gang Deng. "Stable Levitation Performance of Bulk High Temperature Superconductor Magnet in Applied Magnetic Fields." Materials Science Forum 787 (April 2014): 436–41. http://dx.doi.org/10.4028/www.scientific.net/msf.787.436.

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Bulk high temperature superconductor magnet (HTSCM) has been considered to get the better stable levitation in applied magnetic field which is not the original field-cooling magnetization (FCM) field in this paper. The vibration disturbance experiments firstly showed that a permanent magnet (PM) can suspend stably under a bulk Yttrium Barium Copper Oxide (YBCO) HTSCM. This implies that the stable levitation of one single bulk HTSCM is able to realize in the other magnetic field even from one single small PM due to the re-magnetization effect. Secondly, it is found that the HTSCM with more trap

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32

Owocki, S. P., A. ud-Doula, R. H. D. Townsend, V. Petit, J. O. Sundqvist, and D. H. Cohen. "Wind channeling, magnetospheres, and spindown of magnetic massive stars." Proceedings of the International Astronomical Union 9, S302 (2013): 320–29. http://dx.doi.org/10.1017/s1743921314002415.

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AbstractA subpopulation (~10%) of hot, luminous, massive stars have been revealed through spectropolarimetry to harbor strong (hundreds to tens of thousand Gauss), steady, large-scale (often significantly dipolar) magnetic fields. This review focuses on the role of such fields in channeling and trapping the radiatively driven wind of massive stars, including both in the strongly perturbed outflow from open field regions, and the wind-fed “magnetospheres” that develop from closed magnetic loops. For B-type stars with weak winds and moderately fast rotation, one finds “centrifugal magnetospheres

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33

Miyahira, William, Andrew P. Rotunno, ShuangLi Du, and Seth Aubin. "Microwave Atom Chip Design." Atoms 9, no. 3 (2021): 54. http://dx.doi.org/10.3390/atoms9030054.

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We present a toolbox of microstrip building blocks for microwave atom chips geared towards trapped atom interferometry. Transverse trapping potentials based on the AC Zeeman (ACZ) effect can be formed from the combined microwave magnetic near fields of a pair or a triplet of parallel microstrip transmission lines. Axial confinement can be provided by a microwave lattice (standing wave) along the microstrip traces. Microwave fields provide additional parameters for dynamically adjusting ACZ potentials: detuning of the applied frequency to select atomic transitions and local polarization control

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34

Gutiérrez, Manuel J., Joaquín Berrocal, Juan M. Cornejo, et al. "The TRAPSENSOR facility: an open-ring 7 tesla Penning trap for laser-based precision experiments." New Journal of Physics 21, no. 2 (2019): 023023. https://doi.org/10.1088/1367-2630/aafa45.

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A Penning-trap facility for high-precision mass spectrometry based on a novel detection method has been built. This method consists in measuring motional frequencies of singly-charged ions trapped in strong magnetic fields through the fluorescence photons from laser-cooled 40Ca+ ions, to overcome limitations faced in electronic single-ion detection techniques. The key element of this facility is an open-ring Penning trap coupled upstream to a preparation Penning trap similar to those used at Radioactive Ion Beam facilities. Here we present a full characterization of the trap and demonstrate mo

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35

Monarkha, V. Yu, V. A. Paschenko, and V. P. Timofeev. "Pinning features of the magnetic flux trapped by YBCO single crystals in weak constant magnetic fields." Low Temperature Physics 39, no. 2 (2013): 107–10. http://dx.doi.org/10.1063/1.4791772.

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36

WANG, JUN-PING. "A NOTE ON SPIN-GAUGE EFFECT OF THE BOSE–EINSTEIN CONDENSATES IN ATOMIC GASES." Modern Physics Letters B 20, no. 30 (2006): 1973–79. http://dx.doi.org/10.1142/s0217984906012468.

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The Bose–Einstein condensates of the alkali atomic gases trapped in magnetic traps are spinor fields with local "spin-gauge" symmetry.5 Here we show that there is fundamental difference in the manifestation of spin-gauge effects between two low-field-seeking states: |F=2,mF=2〉 and |1,-1〉.

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37

Rostami, Kh R., A. A. Sukhanov, and V. V. Mantorov. "Nonmonotonic field dependences of trapped magnetic flux in Y-HTS: “negative trapping” effect." Low Temperature Physics 22, no. 1 (1996): 42–44. https://doi.org/10.1063/10.0033924.

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A new type of nonmonotonic field dependences Htr(H) of trapped magnetic field (TMF), which are characterized by the absence of a plateau and a peak and by an extended “negative differential trapping” region in weak magnetic fields (20–50 Oe), is observed. The effect of temperature and transport current on field dependence of TMF is analyzed. A model of interacting superconducting loops is proposed for explaining the observed nonmonotonic dependences Htr(H).

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38

Brizhik, Larissa S. "EFFECTS OF MAGNETIC FIELDS ON SOLITON MEDIATED CHARGE TRANSPORT IN BIOLOGICAL SYSTEMS." JOURNAL OF ADVANCES IN PHYSICS 6, no. 2 (2014): 1191–201. http://dx.doi.org/10.24297/jap.v6i2.1795.

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In this paper, we analyze biological effects produced by magnetic fields in order to elucidate the physical mechanisms, which can produce them. We show that there is a chierarchy of such mechanisms and that the mutual interplay between them can result in the synergetic outcome. In particular, we analyze the biological effects of magnetic fields on soliton mediated charge transport in the redox processes in living organisms. Such solitons are described by nonlinear systems of equations and represent electrons that are self-trapped in alpha-helical polypeptides due to the moderately strong elect

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39

Low, B. C. "The Dynamics of Solar Coronal Magnetic Fields." Symposium - International Astronomical Union 140 (1990): 13–15. http://dx.doi.org/10.1017/s0074180900189387.

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The solar corona is a hot (106K) highly ionized plasma structured by its magnetic field into open regions where the solar wind escapes and closed regions where relatively dense plasma is trapped in near static equilibrium. Observed in Thomson-scattered light at times of solar eclipse or by artificial occultation using a coronagraph, these closed regions show up conspicuously as helmet-shaped bright structures. The large scale corona evolves in time in response to the solar dynamo that continually injects new magnetic flux into the corona with the eventual reversal of the global magnetic polari

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Suzuki, A., A. Wongsatanawarid, H. Seki, and M. Murakami. "Improvement in trapped fields by stacking bulk superconductors." Physica C: Superconductivity 469, no. 15-20 (2009): 1266–69. http://dx.doi.org/10.1016/j.physc.2009.05.124.

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41

GUPTA, V. K., ASHA GUPTA, S. SINGH, and J. D. ANAND. "EFFECT OF MAGNETIC FIELD ON THE PHASE TRANSITION FROM NUCLEAR MATTER TO QUARK MATTER DURING PROTO-NEUTRON STAR EVOLUTION." International Journal of Modern Physics D 11, no. 04 (2002): 545–59. http://dx.doi.org/10.1142/s0218271802001731.

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We have studied phase transition from hadron matter to quark matter in the presence of high magnetic fields incorporating the trapped electron neutrinos at finite temperatures. We have used the density dependent quark mass (DDQM) model for the quark phase while the hadron phase is treated in the frame-work of relativistic mean field theory. It is seen that the energy density in the hadron phase at phase transition decreases with both magnetic field and temperature.

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42

Gabovich, A. M., D. P. Moiseev, G. I. Panaitov, V. M. Postnikov, A. F. Prikhot’ko, and A. S. Sidorenko. "On the dynamics of the superconducting glass YBa2Cu3O7." Soviet Journal of Low Temperature Physics 14, no. 6 (1988): 359–60. https://doi.org/10.1063/10.0031963.

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The relaxation in time of the magnetic flux trapped during cooling in magnetic fields H = 10 and 50 Oe in the superconducting ceramics YBa2Cu3O7 with Tc ≈ 98 K is measured at T = 4.2 K. The flux decreases logarithmically, which points towards the existence of a nonequilibrium state similar to the spin-glass state in magnets. The same dependence is observed for the superconducting metal oxide sample BaPb0.75Bi0.25O3 with Tc ≈ 8 K, cooled in a field H = 1.5 Oe.

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43

Johansen, Anders. "The role of magnetic fields for planetary formation." Proceedings of the International Astronomical Union 4, S259 (2008): 249–58. http://dx.doi.org/10.1017/s1743921309030592.

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AbstractThe role of magnetic fields for the formation of planets is reviewed. Protoplanetary disc turbulence driven by the magnetorotational instability has a huge influence on the early stages of planet formation. Small dust grains are transported both vertically and radially in the disc by turbulent diffusion, counteracting sedimentation to the mid-plane and transporting crystalline material from the hot inner disc to the outer parts. The conclusion from recent efforts to measure the turbulent diffusion coefficient of magnetorotational turbulence is that turbulent diffusion of small particle

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44

Rizzato, F. B. "Main-signal filamentation in free-electron lasers with deeply trapped particles." Journal of Plasma Physics 44, no. 1 (1990): 33–45. http://dx.doi.org/10.1017/s0022377800014999.

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The filamentation of electromagnetic waves in a free-electron laser with deeply trapped electrons is analysed. This instability is the result of particle bunching along transverse directions (with respect to the fast wave vector), as opposed to the untrapped-electron case, where it is a result of longitudinal bunching. Two cases are considered: (i) the non-resonant or reactive one, with purely imaginary growth rates; and (ii) the resonant one, with large (small) values of the real (imaginary) part of the perturbing frequency. In particular, we find that the reactive instability occurs only whe

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45

STUART, C. A. "CYLINDRICAL TM-MODES IN A HOMOGENEOUS SELF-FOCUSING DIELECTRIC." Mathematical Models and Methods in Applied Sciences 06, no. 07 (1996): 977–1008. http://dx.doi.org/10.1142/s0218202596000407.

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This paper deals with the mathematical analysis of self-trapped light beams in a homogeneous medium which has a self-focusing dielectric response. We consider modes where the electromagnetic fields have a cylindrical symmetry and the magnetic field is transverse to the direction of propagation. The main results establish a range of wavelengths for which such guided modes exist. The behavior of the power of the beam as the wavelength approaches its extreme values is also determined. The existence of self-trapped modes is established using a variational principle. Bounds on the wavelength and th

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Feng, Yan, Xiaoqiang Pei, Yongjun Cheng, et al. "Simulation of the influence of constant uniform magnetic field on a miniature LIT mass spectrometer." European Journal of Mass Spectrometry 24, no. 2 (2017): 196–205. http://dx.doi.org/10.1177/1469066717728006.

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In this paper, the effects of constant uniform magnetic fields on a miniature linear ion trap mass spectrometer with hyperbolic electrodes are simulated using SIMION 8.0 3D software. Magnetic fields in different directions have different effects on the trajectories of the trapped ions and the shape of the ion cloud. When the magnetic field is applied in the z-direction, namely the ion injection direction, the magnetic field will cause the ions focusing to the z-axis, and exert a compression effect on the ion cloud. When the magnetic field is applied in the x-y plane, the original ion cloud wil

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Ainslie, M. D., and A. Yamamoto. "Thickness Dependence of Trapped Magnetic Fields in Machined Bulk MgB₂ Superconductors." IEEE Transactions on Applied Superconductivity 32, no. 4 (2022): 1–4. http://dx.doi.org/10.1109/tasc.2022.3147140.

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Leemans, W. P., C. E. Clayton, and C. Joshi. "Detection of trapped magnetic fields in a theta pinch using a relativistic electron beam." Review of Scientific Instruments 59, no. 8 (1988): 1641–43. http://dx.doi.org/10.1063/1.1140171.

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Kh. R. Rostami. "Advanced Hall Magnetometer with improved performance." Technical Physics 67, no. 12 (2022): 1564. http://dx.doi.org/10.21883/tp.2022.12.55191.16-22.

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A sharp jump in the magnetic response near the first critical twins magnetic field Hic1 was generated under the combined action of a constant biased and a local oscillating damped magnetic fields on the surface of the YBa2Cu3O7-x epitaxial film. The possibility of increasing due to this jump the sensitivity of a standard Hall magnetometer from ~2.5·10-3 Gs/Hz1/2 to ~8·10-7 Gs/Hz1/2 in the frequency range ~1 kHz has been demonstrated. The range of the measured magnetic fields of the magnetometer was extended to the region of weak fields ~(8·10-7-2.5·10-3) Oe, while maintaining the accuracy and

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MANZOOR, SADIA, S. K. HASANAIN, M. A. NOMAN, and G. S. BHATTI. "MAGNETIC FIELD AND HISTORY DEPENDENCE OF THE HARMONIC SUSCEPTIBILITY IN A GRANULAR SUPERCONDUCTOR." International Journal of Modern Physics B 09, no. 02 (1995): 177–93. http://dx.doi.org/10.1142/s0217979295000100.

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We report on the generation of harmonics of the ac susceptibility in a typical Y(123) granular superconductor. The intergrain harmonic response has been studied at T=77 K as a function of the ac field, both with and without superposed dc fields. We find that our results can be adequately described by the Anderson-Kim model. The effect of superposed dc fields on the ac field dependence of the even and odd harmonics has been qualitatively explained. Magnetic history dependence has ben studied in the field cooled and remnant states. Effects of field cooling indicate that the intergrain fields in

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