Download or read book Neutron Capture Cross Section Measurements of sup 99 Tc Up to 80 KeV written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Capture and transmission measurements were carried out. Eight new resonances were observed below 1.1 keV. Twenty-one new resonances were seen above 1.1 keV. Energy levels and integrated resonance yields are tabulated. The capture yield divided by sample thickness is shown; data were corrected for self-shielding and multiple scattering. ENDF data underpredict the cross section by about 15%. 1 figure, 1 table. (RWR).
Download or read book The Neutron Capture Cross Section of 99 TC Up to 80 KEV written by Robert C. Little and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron Cross Section Measurements for the Fast Breeder Program Summaries of Research Activities at Gaerttner Linac Laboratory written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research was concerned with the measurement of neutron cross sections of importance to the Fast Breeder Reactor. The capture and total cross sections of fission products (/sup 101/ /sup 102/ /sup 104/Ru, /sup 143/ /sup 145/Nd, /sup 149/Sm, /sup 95/ /sup 97/Mo, Cs, Pr, Pd, /sup 107/Pd, /sup 99/Tc) and tag gases (Kr, /sup 78/ /sup 80/Kr) were measured up to 100 keV. Filtered neutron beams were used to measure the capture cross section of /sup 238/U (with an Fe filter) and the total cross section of Na (with a Na filter). A radioactive neutron capture detector was developed. A list of publications is included.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron Cross Sections and Technology written by David T. Goldman and published by . This book was released on 1968 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kev Neutron Capture Cross Section Measurements for sup 101 RU sup 102 RU sup 104 RU sup 145 ND and sup 149 SM written by Roger A. Shaw and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Neutron Resonances written by Said F. Mughabghab and published by Elsevier. This book was released on 2018-02-09 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlas of Neutron Resonances: Resonance Properties and Thermal Cross Sections Z= 1-60, Sixth Edition, contains an extensive list of detailed individual neutron resonance parameters for Z=1-60, as well as thermal cross sections, capture resonance integrals, average resonance parameters and a short survey of the physics of thermal and resonance neutrons. The long introduction contains: nuclear physics formulas aimed at neutron physicists; topics of special interest such as valence neutron capture, nuclear level density parameters, and s-, p-, and d-wave neutron strength functions; and various comparisons of measured quantities with the predictions of nuclear models, such as the optical model. As in the last edition, additional features have been added to appeal to a wider spectrum of users. These include: spin-dependent scattering lengths that are of interest to solid-state physicists, nuclear physicists and neutron evaluators; calculated and measured Maxwellian average 5-keV and 30-keV capture cross sections of importance to astrophysicists involved in nucleosynthesis modeling; s-, p-, and d-wave average radiative widths; and, nuclear level density parameters. Provides a comparison of average resonance parameters with optical model calculations and with the generalized Landau-Fermi model Presents scattering radii for various partial waves from the analysis of total neutron cross sections in the keV to MeV energy region Includes a brief review of sub-threshold fission Examines consistent treatment of average neutron parameters with values from the resolved resonance region
Download or read book High resolution Neutron Capture and Transmission Measurements and the Stellar Neutron Capture Cross Sections Of sup 116 120 n written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved astrophysical reaction rates for[sup 116,120]Sn(n, [gamma]) are of interest because nucleosynthesis models have not been able to reproduce the observed abundances in this mass region. For example, previous s-process calculations have consistently underproduced the s-only isotope[sup 116]Sn. Also, these studies have resulted in residual reprocess abundances for the tin isotopes which are systematically larger than predicted by reprocess calculations. It has been suggested that these problems could be solved by reducing the solar tin abundance by 10-20%, but there is no experimental evidence to justify this renormalization. Instead, it is possible that the problem lies in the (n, T) cross sections used in the reaction network calculations or in the s-process models. One reason to suspect the (n, [gamma]) data is that previous measurements did not extend to low enough energies to determine accurately the Maxwellian-averaged capture cross sections at the low temperatures (kT=6-8 keV) favored by the most recent stellar models of the s process. Also, the two most recent high-precision measurements of the[sup 120]Sn(n, [gamma]) cross section are in serious disagreement. Because of its small size, this cross section could affect (via the s-process branching at[sup 121]Sn) the relative abundances of the three s-only isotopes of Te.
Download or read book Measurement of the sup 238 U Capture Cross Section for Incident Neutron Energies Up to 100 KeV written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High resolution Neutron Capture and Transmission Measurements and the Stellar Neutron Capture Cross Sections of sup 116 120 Sn written by and published by . This book was released on 1997 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved astrophysical reaction rates for {sup 116,120}Sn(n, [gamma]) are of interest because nucleosynthesis models have not been able to reproduce the observed abundances in this mass region. For example, previous s-process calculations have consistently underproduced the s-only isotope 116Sn. Also, these studies have resulted in residual reprocess abundances for the tin isotopes which are systematically larger than predicted by reprocess calculations. It has been suggested that these problems could be solved by reducing the solar tin abundance by 10-20%, but there is no experimental evidence to justify this renormalization. Instead, it is possible that the problem lies in the (n, T) cross sections used in the reaction network calculations or in the s-process models. One reason to suspect the (n, [gamma]) data is that previous measurements did not extend to low enough energies to determine accurately the Maxwellian-averaged capture cross sections at the low temperatures (kT=6-8 keV) favored by the most recent stellar models of the s process. Also, the two most recent high-precision measurements of the 12°Sn(n, [gamma]) cross section are in serious disagreement. Because of its small size, this cross section could affect (via the s-process branching at 121Sn) the relative abundances of the three s-only isotopes of Te.
Download or read book Neutron Capture Cross Sections from 5 to 100 Kev written by and published by . This book was released on 1965 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron Cross Sections written by Donald James Hughes and published by . This book was released on 1958 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Neutron Resonances written by Said F. Mughabghab and published by Elsevier Science. This book was released on 2018-03-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlas of Neutron Resonances: Resonance Properties and Thermal Cross Sections Z=1-102, Sixth Edition, features an extensive list of detailed individual neutron resonance parameters, thermal cross sections, average resonance parameters and a short survey of the physics of thermal and resonance neutrons. The long introduction contains: nuclear physics formulas aimed at neutron physicists; topics of special interest such as valence neutron capture, nuclear level density parameters, sub-threshold fission and electric dipole radiation treated; and various comparisons of measured quantities with the predictions of nuclear models, such as the optical model and the generalized Landau-Fermi liquid mode. As in the last edition, additional features have been added to appeal to a wider spectrum of users. These include: spin-dependent scattering lengths that are of interest to solid-state physicists, nuclear physicists, and neutron evaluators; calculated and measured Maxwellian average 5-kev and 30-keV capture cross sections of importance to astrophysicists involved in nucleosynthesis modeling; s-, p-, and d- wave average radiative widths; and nuclear level density parameters. The various evaluated neutron strength functions, as well as the scattering radii, are compared with optical model predictions. Extensive applications of the Porter-Thomas distribution, coupled with Bayesian analysis, was made to determine the parity and spacings of neutron resonances.
Download or read book Neutron Cross Sections in the Energy Range 100 Ev It E sub N It 100 Kev written by and published by . This book was released on 1966 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron Cross Sections and Related Measurements written by and published by . This book was released on 1966 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simultaneous Measurements of the Neutron Fission and Capture Cross Sections for sup 235 U for Neutron Energies from 8 EV to 10 KeV written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book INIS Atomindex written by and published by . This book was released on 1987 with total page 1386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
