Academic literature on the topic 'Nuclear spectra'

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Journal articles on the topic "Nuclear spectra"

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Buck, B., A. C. Merchant, and S. M. Perez. "Recurring nuclear band spectra." Journal of Physics: Conference Series 111 (May 1, 2008): 012011. http://dx.doi.org/10.1088/1742-6596/111/1/012011.

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Kunakov, S. K., E. E. Son, Zh Bolatov, and M. Kaster. "Optical spectra in helium plasma generated by nuclear fission fragments." International Journal of Mathematics and Physics 6, no. 1 (2015): 75–81. http://dx.doi.org/10.26577/2218-7987-2015-6-1-75-81.

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Leonidov, A., M. Nardi, and H. Satz. "Hadron spectra from nuclear collisions." Nuclear Physics A 610 (December 1996): 124–31. http://dx.doi.org/10.1016/s0375-9474(96)00348-x.

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Leonidov, A., M. Nardi, and H. Satz. "Hadron spectra from nuclear collisions." Zeitschrift f�r Physik C Particles and Fields 74, no. 3 (May 1, 1997): 535–40. http://dx.doi.org/10.1007/s002880050416.

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Mitchell, G. E., E. G. Bilpuch, P. M. Endt, J. F. Shriner, and T. von Egidy. "Chaotic behavior of nuclear spectra." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 56-57 (May 1991): 446–50. http://dx.doi.org/10.1016/0168-583x(91)96067-u.

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Mesilaakso, Markku, Eeva-Liisa Tolppa, and Paula Nousiainen. "Analysis of 1H and 13C{1H} NMR Spectral Parameters of Diphenylchloroarsine, Diphenylcyanoarsine, and 10-Chloro- 5,10-Dihydrophenarsazine: Identification of the Compounds through Reference to Simulated Spectra." Applied Spectroscopy 51, no. 5 (May 1997): 733–37. http://dx.doi.org/10.1366/0003702971940891.

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The 1H and 13C{1H} nuclear magnetic resonance (NMR) spectra of diphenylchloroarsine, diphenylcyanoarsine, and 10-chloro-5,10-dihydrophenarsazine were recorded from samples prepared in CDCl3, CD2Cl2, and (CD3)2CO. Spectra were analyzed, and detailed 1H NMR spectral parameters were determined by iterative analysis. Simulation of spectra and their use as reference spectra for identification of the compounds under different conditions are discussed.
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Malik, Zvi, Chana Rothmann, Tova Cycowitz, Zwi J. Cycowitz, and Amos M. Cohen. "Spectral Morphometric Characterization of B-CLL Cells Versus Normal Small Lymphocytes." Journal of Histochemistry & Cytochemistry 46, no. 10 (October 1998): 1113–18. http://dx.doi.org/10.1177/002215549804601003.

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Spectral morphometric characterization of typical chronic lymphocytic leukemia (B-CLL) cells vs normal small lymphocytes stained by May-Grunwald-Giemsa was carried out by multipixel spectral imaging. The light intensity (450–850 nm of 104 pixels) from nuclear domains of each stained cell was recorded and represented as light transmittance spectra and optical density. Transmitted light spectra of two nuclear domains were determined, one with low-intensity light transmittance (LIT) and the other with high-intensity light transmittance (HIT). A spectral library was constructed using the four transmitted light spectra representing the HIT and LIT domains of the normal human lymphocytes and the LIT and HIT domains of the CLL cells. The spectral library served to scan CLL lymphocytes from 10 cases of CLL and the lymphocytes of 10 healthy individuals. Each spectrally similar domain in the nuclei of the lymphocytes was assigned an arbitrary color. The morphometric analysis of the spectrally classified nuclei showed specific spectral patterns for B-CLL in 92% of the cells. The specific spectral characteristics of each of the two cell populations were also observed by their optical density light absorbance spectra. We propose that spectral morphometric analysis may serve as an additional diagnostic tool for detection of CLL lymphocytes in a hematological specimen.
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Tsakstara, V., T. S. Kosmas, and J. Sinatkas. "Nuclear response to supernova neutrino spectra." HNPS Proceedings 18 (November 23, 2019): 187. http://dx.doi.org/10.12681/hnps.2551.

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In current probes searching for rare event processes, appropriate nuclear targets are employed (in the COBRA double-beta decay detector the CdZnTe semiconductor is used). In this work the response of such detectors to various low-energy neutrino spectra is explored starting from state-by-state calculations of the neutrino-nucleus reactions cross sections obtained by using the quasi particle random phase approximation (QRPA) based on realistic two-body residual interactions. As a concrete example, we examine the response of 64Zn isotope to low energy supernova neutrinos.
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Almoukhalalati, Adel, Avijit Shee, and Trond Saue. "Nuclear size effects in vibrational spectra." Physical Chemistry Chemical Physics 18, no. 22 (2016): 15406–17. http://dx.doi.org/10.1039/c6cp01913g.

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Reshetnikov, V. P., M. Faúndez-Abans, and M. de Oliveira-Abans. "Nuclear spectra of polar-ring galaxies." Monthly Notices of the Royal Astronomical Society 322, no. 4 (April 2001): 689–94. http://dx.doi.org/10.1046/j.1365-8711.2001.04134.x.

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Dissertations / Theses on the topic "Nuclear spectra"

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Blundell, S. "The theory of nuclear effects in atomic spectra." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355731.

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Hime, Andrew. "Heavy neutrino emission in nuclear beta decay spectra." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293432.

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Croft, David. "Automated assignment of high resolution nuclear magnetic resonance spectra." [S.l. : s.n.], 2000. http://www.diss.fu-berlin.de/2000/22/index.html.

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Bauer, Peter Helmuth. "Symmetries and fluctuations, an application to nuclear and atomic spectra." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1994. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/MQ31412.pdf.

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McBride, Vanessa A. "Cluster model investigation of nuclear spectra and electric quadrupole transitions." Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/6537.

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We review a cluster model for even-even nuclei and derive a new relation between the excitation energies and the electric quadrupole transition strengths of these nuclei. A novel method for determining the likely clustercore decompositions of a given nucleus is described, and is tested by comparing theoretical cluster model spectra with their experimental counterparts for a representative set of Yb isotopes. A further method, based on least squares fits to spectra, is also examined.
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Xu, Zhenxiang. "Analysis of the Unbound Spectra of 12Li and 13Li." Licentiate thesis, KTH, Kärnfysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-30287.

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The properties of unbound nuclei 12Li and 13Li are calculated within themultistep shell model in the complex energy plane by assuming that the spectraare determined by the motion of neutrons outside the 9Li core. It is foundthat in 12Li the ground state consists of an antibound 1/2+ state and thatonly this and a 1/2− and a 5/2+ excited states are physically meaningfulresonances. Calculations suggest that there is no bound or antibound statein 13Li.
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Friedrich, J. O. "Frequency and spatial selectivity in nuclear magnetic resonance spectroscopy." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234964.

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Régnier, David. "Contribution à l'étude des gammas prompts de fission." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENI065.

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Cette thèse a essentiellement été motivée par la montée en puissance de la thématique des échauffements nucléaires en réacteurs. Elle avait pour objectif la mise en place de méthodes permettant la simulation de l'émission des gammas prompts de fission. Pour répondre à cette attente, différents algorithmes de désexcitation d'un noyau ont été implémentés. Ils ont été testés avec succès via plusieurs calculs d'application (rapport d'embranchement isomérique, largeur radiative totale, etc). Ces méthodes ont ensuite été mises en oeuvre dans le cadre du code de fission FIFRELIN. L'outil qui en résulte, permet la détermination d'un grand nombre d'observables de fission, dans le cadre d'un modèle unique. Une étude de sensibilité des résultats à différents éléments du calcul a été réalisée. Enfin, des simulations de la fission spontanée du 252Cf, et des fissions induites par neutrons thermiques sur l' 235U et le 239Pu ont été menées. Les spectres des gammas prompts pour ces trois systèmes fissionnants ont pu être déterminés. Les résultats obtenus sont en très bon accord avec les données expérimentales disponibles, dont certaines ont été publiées récemment (2012 et 2013)
This PhD thesis has essentially been motivated by the nuclear heating problematic in reactors. The main goal of this work was the production of methods capable of simulating the prompt gamma emission from fission. First of all, several algorithms for the treatment of the nucleus deexcitation were implemented. They have been succesfully tested through various calculations (isomeric branching ratio, total radiative width, etc). These methods were then incorporated in the frame of the fission code FIFRELIN. The tool which results from this work, enables the determination of numerous fission observables in the frame of a single consistent model. A sensitivity study of the results to several numerical and nuclear models has been realized. At last, calculation have been lead for the 252Cf spontaneous fission and the thermal neutron induced fission of 235U and 239Pu. The prompt gamma spectra obtained for those three fissionning systems have been determined. The results are in good agreement with available experimental data, including recent measurements published in 2012 and 2013
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Anastasiadis, Anastasios. "Calculation of γ-ray source spectra for used LWR nuclear fuels." Thesis, Uppsala universitet, Tillämpad kärnfysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-377868.

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The present project aims to provide the γ-ray source spectrum (the gamma energies and their intensities) for a nuclear fuel, given its physical dimensions, its enrichment and the detailed knowledge of the burnup history. In a nuclear reactor, the nuclide concentrations within the nuclear fuel change due to nuclear transmutation caused by neutron irradiation and due to the radioactive decay during and after the irradiation. This alteration in the fuel composition is simulated in this project with a burnup-mode simulation using the reactor physics code Serpent 2. A second Serpent 2 photon-mode simulation follows as to evaluate the γ-radiation spectrum from the respective nuclides produced in the first simulation. Finally, the γ-ray mass attenuation coefficients for selected energies are evaluated by combining the fuel elemental concentrations with the corresponding mass attenuation coefficients for fresh fuel based on NIST XCOM database. To facilitate the repeated evaluation of the γ-ray source spectrum, a custom-made MATLAB® function, GetEmissions, that initiates the Serpent 2 simulations was created. This function utilizes the user input data, which are the fuel dimensions, the fuel enrichment and the burnup history, as to automatically create an input for the Serpent 2 code. Afterwards, it executes burnup and photon simulations, and finally extracts the data sought for, which are the emitted by the fuel γ-ray energies and their intensities (γ-ray source spectrum). In addition, for the given fuel characteristics, the function provides the mass attenuation coefficient for a selected γ-ray passing the fuel. Using the GetEmissions function, the gamma spectra from ten nuclear burnup history cases representing a scan through low and high burnup and short, medium and long cooling times are calculated. The resulting top ten gamma energies are listed by absolute intensity, and information about the mother nuclide and the decay is provided.
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Madian, Ashraf G. "Using affinity purification -- mass spectrometry to identify aryl hydrocarbon receptor nuclear translocator interacting proteins." Scholarly Commons, 2005. https://scholarlycommons.pacific.edu/uop_etds/605.

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The aryl hydrocarbon nuclear translocator (ARNT) belongs to the family of basic helix loop helix proteins. ARNT forms a heterodimer with aryl hydrocarbon receptor (AhR). This heterodimer binds to the dioxin responsive element (DRE) causing the regulation of the gene expression of some enzymes such as CYP1Al. Studies show that the ARNT-AhR heterodimer needs protein factors to bind to DRE, and most of these protein factors are still unknown. ARNT also heterodimerizes with hypoxia inducible factor 1 a (HIF-1 a) which mediates the cellular responses to hypoxia. The purpose of this research is to use a combination of affinity chromatography and mass spectrometry techniques to identify the proteins that interact with ARNT. We chose mouse liver as the protein source. We planned to isolate the ARNT interacting proteins from the mouse liver protein extract by using the TALON® resin column bounded with 6x HIS-ARNT. Two negative control experiments were done. The first one by the application of the liver extract only on non-ARNT bound column. The second one by the application of 100 mg of bovine serum albumin on 6x HIS-ARNT bound column. The mouse liver extract was applied on 6x HIS-ARNT bound column. The column was washed with an increasing concentration of potassium chloride (0.05 M- 1 M). ARNT was eluted with a buffer containing 250 and 500 mM imidazole. The different washing fractions were compared with the negative control experiments. There was no difference between this and experiment and negative controls. We also tested using in-vitro chemical cross-linking with formaldehyde. Some distorted bands that may '· represent crosslinked proteins appeared above ARNT molecular weight by the addition of 1% paraformaldehyde for 20 minutes at 37°C, and for 2 hours at 30° and room temperatures. These bands were absent in the negative control experiments. The mass spectrometric protocols for identification of trace amount of proteins using peptide mass fingerprinting were tested using a standard protein (Bovine Serum Albumin).
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Books on the topic "Nuclear spectra"

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Fano, Ugo. Atomic collisions and spectra. Orlando: Academic Press, 1986.

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Shinozuka, Masanobu. Power spectral density functions compatible with NRC regulatory guide 1.60 response spectra. Washington, DC: Division of Engineering, Division of Reactor Accident Analysis, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1988.

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Bernreuter, D. L. Development of site specific response spectra. Washington, DC: Division of Engineering Safety, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1987.

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Bernreuter, D. L. Development of site specific response spectra. Washington, DC: Division of Engineering Safety, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1987.

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Bauer, Peter Helmuth. Symmetries and fluctuations: An application to nuclear and atomic spectra. Sudbury, Ont: Laurentian University, Department of Physics and Astronomy, 1994.

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Brandolini, Anita J. NMR spectra of polymers and polymer additives. New York: Marcel Dekker, 2000.

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Malmodin, Daniel. Efficient recording and processing of protein NMR spectra. Göteborg: Göteborg University, Department of Chemistry, 2006.

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Goldenbaum, Frank. The physics of spallation processes: Theory, experiments, and applications. Jülich: Forschungszentrum Jülich, Zentralbibliothek, 2004.

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International Conference on the Spectroscopy of Heavy Nuclei (1989 Hagia Pelagarē, Greece). The spectroscopy of heavy nuclei, 1989: Proceedings of the International Conference on the Spectroscopy of Heavy Nuclei held in Agia Pelagia, Crete, 25 June-1 July 1989. Bristol, England: Institute of Physics, 1990.

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P, Gangrskiĭ I͡U. Oskolki delenii͡a i͡ader. Moskva: Ėnergoatomizdat, 1986.

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Book chapters on the topic "Nuclear spectra"

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Wong, S. S. M. "Fluctuations in Nuclear Spectra." In NATO ASI Series, 83–101. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2443-0_5.

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Cravo, E., A. C. Fonseca, and Y. Koike. "Energy Spectra of 9 Λ Be." In Nuclear Dynamics: From Quarks to Nuclei, 237–45. Vienna: Springer Vienna, 2003. http://dx.doi.org/10.1007/978-3-7091-6014-5_25.

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Fleming, Ian, and Dudley Williams. "1D Nuclear Magnetic Resonance Spectra." In Spectroscopic Methods in Organic Chemistry, 123–276. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18252-6_4.

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Fleming, Ian, and Dudley Williams. "2D-Nuclear Magnetic Resonance Spectra." In Spectroscopic Methods in Organic Chemistry, 277–333. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18252-6_5.

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Frank, A. "Algebraic Approach to Molecular Spectra." In Nuclear Physics at the Borderlines, 111–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84708-0_8.

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Zohuri, Bahman. "Thermal Spectra and Thermal Cross Sections." In Neutronic Analysis For Nuclear Reactor Systems, 361–85. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04906-5_9.

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Zohuri, Bahman. "Thermal Spectra and Thermal Cross Sections." In Neutronic Analysis For Nuclear Reactor Systems, 367–91. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42964-9_9.

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Hanada, R. "On the Orientation Dependence of TDPAC Spectra." In Nuclear Physics Applications on Materials Science, 431–32. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2800-8_34.

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Bonatsos, Dennis, N. Karoussos, C. Daskaloyannis, S. B. Drenska, N. Minkov, P. P. Raychev, R. P. Roussev, and J. Maruani. "Staggering Effects in Nuclear and Molecular Spectra." In New Trends in Quantum Systems in Chemistry and Physics, 393–416. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/0-306-46951-0_21.

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Szymański, Sławomir, and Piotr Bernatowicz. "Nuclear Spin Relaxation Effects in NMR Spectra." In Classical and Quantum Molecular Dynamics in NMR Spectra, 145–93. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90781-9_4.

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Conference papers on the topic "Nuclear spectra"

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Bhargava, Divakar, and Keshab K. Dwivedy. "Seismic Qualification of Nuclear Plant Components Using PSHA-Based Spectra." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93304.

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With the prospect of a revival of nuclear power industry after a long hiatus, there is an emphasis on designing the next breed of nuclear plants in the US using seismic spectra derived from a probabilistic seismic hazard analysis (PSHA). The methods available in guidance documents to establish Safe Shutdown Earthquake (SSE) spectral shapes at a site using PSHA invariably show that the risk-based spectra have high peaks, high zero period accelerations (ZPA), and significant energy content at higher frequencies when compared to the previous deterministic spectra at the same site. It is well known that earthquakes in Central and Eastern United States (CEUS) will typically contain some high frequency energy. While the early site permit applications and reactor supplier’s design certifications for new plants are expected to use the PSHA-based spectra for their seismic design, existing nuclear plants designed to deterministic spectra may also need to be reviewed for the probabilistic seismic spectra at their sites. This paper considers the implications of a probabilistic hazard spectrum for the seismic qualification of equipment and components for an operating plant and suggests a procedure for conducting a review. Amplification of ground spectra through nuclear plant structures and other intervening systems such as a piping system or an electrical cabinet are calculated using conventional linear dynamic analysis methods in much the same way as was done in the past for high frequency hydrodynamic loads in the Boiling Water Reactor (BWR) containments. Electrical and mechanical equipment, including devices such as relays that may be sensitive to high frequency vibratory loads are evaluated. While the spectral peaks at equipment mounting location are high at higher frequencies, the damage potential is considerably low. For an existing plant, a limited review of the previous seismic analyses and testing with the redefined seismic spectra concludes that the previous design has sufficient seismic margin. Implications of the PSHA based spectra for seismic qualification of equipment for new plants is not expected to be as severe as once believed. Additional assurance of safety can be obtained by updating or conducting a plant-specific seismic probabilistic risk analysis.
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Manton, N. S., Matko Milin, Tamara Niksic, Suzana Szilner, and Dario Vretenar. "Nuclear Spectra from Skyrmions." In NUCLEAR STRUCTURE AND DYNAMICS ’09: Proceedings of the International Conference. AIP, 2009. http://dx.doi.org/10.1063/1.3232080.

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Brahimi, Malek, and Sidi Berri. "Sensitivity of Response Spectra to ARMA Model Process." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48635.

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The sensitivity analysis in this study focuses on the sensitivity of response spectra to the number of peaks in the envelope function and the order of the Autoregressive Moving Average of order p, q (ARMA( p,q)) process used to represent an earthquake time series. Results consist of two sets of response spectra: one set corresponds to the one peak for envelope function and ARMA(2,1), the second set involves a change in the number of peaks assumed and the order p, q of fitted ARMA(2,1) models. For comparison purposes, response data were normalized by dividing all spectral ordinates by the corresponding ordinates for the one peak, ARMA(2,1) models for the same earthquake. It was conclude that, models of order (2,1) are sufficient to estimate the damage effect of an earthquake with relatively few parameters.
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Lo Iudice, Nicola. "Microscopic studies of multiphonon nuclear spectra." In Workshop on Photon Strength Functions and Related Topics. Trieste, Italy: Sissa Medialab, 2008. http://dx.doi.org/10.22323/1.044.0014.

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Xu, HongKun, Fang Fang, Shijun Ni, Jianfeng He, and Lei You. "Gamma Spectrum Analysis of Chang’E-1 for Lunar Detection." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29126.

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Gamma-ray spectrum analysis was essential for detecting the elemental abundance and distribution in lunar science. However, for the low-energy region of gamma-ray spectrum, weak peaks were implicated in the fast-decreasing background, and it was difficult to extract characteristic information from original spectra. In order to get a better analytic result, based on wavelet and FFT filtering methods in frequency domain, we had processed the gamma-ray spectrometer (GRS) data of Chang’E-1 (CE-1), and well extracted some useful information of spectral characteristic peaks. Then we preliminarily mapped the distribution of net peak counts for potassium on lunar surface, which indirectly reflected the distribution of elemental abundance. At last, we compared our analytic result with that of Apollo and Lunar Prospector (LP), and found some consistencies and differences.
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Nishimura, T. "Neutrino Energy Spectra from Nuclear Reactors Calculated from Nuclear Data Libraries." In INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY. AIP, 2005. http://dx.doi.org/10.1063/1.1945337.

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Brahimi, Malek, Sidi Berri, Abdelrazak Menasseri, and Abdelrachid Boulaouad. "The Use of Stochastic Models to Measure Damage Potential in Acceleration Time Series." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75349.

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ARMA models are obtained with parameters chosen to fit real accelerograms of different earthquake records. The maximum likelihood technique is used to estimate the parameters. A random set of earthquakes is generated for each event and used to establish statistically valid structural response spectra. From a sample of earthquakes, the mean and variance of response spectral ordinates are obtained for damage predictors namely peak linear displacement, ductility demand and hysteretic energy demand and compared to spectra based on single earthquake records. These Models are used to assess the damage potential in seismic records.
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ANDREOZZI, F., F. KNAPP, N. LO IUDICE, A. PORRINO, and J. KVASIL. "NEW MICROSCOPIC APPROACH TO MULTIPHONON NUCLEAR SPECTRA." In Proceedings of the 9th International Spring Seminar on Nuclear Physics. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812779038_0051.

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Kähkönen, Jukka, and Pentti Varpasuo. "Generation of Response Spectra Compatible Artificial Acceleration Time Histories." In 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icone20-power2012-54187.

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A procedure to generate artificial acceleration time histories compatible with predefined target response spectrum is presented. The procedure is demonstrated with three examples. It was found out that the generated artificial histories yield high quality response spectra for single-damping defined target spectra. A need for method that yields histories matching target spectra defined with multiple damping values was recognized.
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Pfund, David M., Robert C. Runkle, Kevin K. Anderson, and Kenneth D. Jarman. "Examination of Count-starved Gamma Spectra Using the Method of Spectral Comparison Ratios." In 2006 IEEE Nuclear Science Symposium Conference Record. IEEE, 2006. http://dx.doi.org/10.1109/nssmic.2006.356110.

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Reports on the topic "Nuclear spectra"

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Riley, Mark, and Akis Pipidis. The Mechanical Analogue of the "Backbending" Phenomenon in Nuclear-structure Physics. Florida State University, May 2008. http://dx.doi.org/10.33009/fsu_physics-backbending.

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This short pedagogical movie illustrates an effect in nuclear physics called backbending which was first observed in the study of the rotational behavior of rapidly rotating rare-earth nuclei in Stockholm, Sweden in 1971. The video contains a mechanical analog utilizing rare-earth magnets and rotating gyroscopes on a turntable along with some historic spectra and papers associated with this landmark discovery together with its explanation in terms of the Coriolis induced uncoupling and rotational alignment of a specific pair of particles occupying high-j intruder orbitals. Thus backbending represents a crossing in energy of the groundstate, or vacuum, rotational band by another band which has two unpaired high-j nucleons (two quasi-particles) with their individual angular momenta aligned with the rotation axis of the rapidly rotating nucleus. Backbending was a major surprise which pushed the field of nuclear structure physics forward but which is now sufficiently well understood that it can be used as a precision spectroscopic tool providing useful insight for example, into nuclear pairing correlations and changes in the latter due to blocking effects and quasi-particle seniority, nuclear deformation, the excited configurations of particular rotational structures and the placement of proton and neutron intruder orbitals at the Fermi surface.
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2

Neudecker, Denise. Introducing Nuclear Data Evaluations of Prompt Fission Neutron Spectra. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1186041.

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3

Logan, Thomas P., and David A. Sartori. Proton Nuclear Magnetic Resonance Spectra of Sulfur Mustard and 2-Chloroethyl Ethyl Sulfide in Selected Solvents. Fort Belvoir, VA: Defense Technical Information Center, July 2002. http://dx.doi.org/10.21236/ada411995.

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4

Dickens, J. K. Comparisons of experimental beta-ray spectra important to decay heat predictions with ENSDF (Evaluated Nuclear Structure Data File) evaluations. Office of Scientific and Technical Information (OSTI), March 1990. http://dx.doi.org/10.2172/7044536.

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5

Teitelbaum, L. P. Charged particle spectra in [sup 32]S + [sup 32]S interactions at 200 GeV/nucleon from CCD-imaged nuclear collisions in a streamer chamber. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/6891312.

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6

Wei, X., J. Braverman, M. Miranda, M. E. Rosario, and C. J. Costantino. Depth-dependent Vertical-to-Horizontal (V/H) Ratios of Free-Field Ground Motion Response Spectra for Deeply Embedded Nuclear Structures. Office of Scientific and Technical Information (OSTI), February 2015. http://dx.doi.org/10.2172/1176998.

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7

Teitelbaum, Lawrence Paul. Charged particle spectra in 32S + 32S interactions at 200 GeV/nucleon from CCD-imaged nuclear collisions in a streamer chamber. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/10103003.

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8

Phillips, J. S. Prediction of Pseudo relative velocity response spectra at Yucca Mountain for underground nuclear explosions conducted in the Pahute Mesa testing area at the Nevada testing site; Yucca Mountain Site Characterization Project. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/138354.

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9

Fang, Guang Yin. Color Transparency of Nuclear Matter to Hard Scattered Hadrons and the Nucleon Spectral Functions. Office of Scientific and Technical Information (OSTI), April 1989. http://dx.doi.org/10.2172/1375746.

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10

Henderson, J. R., M. O. Smith, and M. E. Zelinski. Overhead Detection of Underground Nuclear Explosions by Multi-Spectral and Infrared Imaging. Office of Scientific and Technical Information (OSTI), September 2010. http://dx.doi.org/10.2172/1120914.

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