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Author : Michael J. Bennett
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (467 download)
Download or read book Fast Neutron Induced Fission of U238 written by Michael J. Bennett and published by . This book was released on 1963 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Leland R. Bunney
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)
Download or read book Gamma-ray Spectra of the Products of Fast Neutron Fission of U235 and U238 at Selected Times After Fission written by Leland R. Bunney and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental measurements of the gamma-ray pulse height distributions due to the products of fast-neutron-induced fission of Uranium-235 and Uranium-238 are presented. The measurements were made at nine selected times after fission from 15 minutes to 3 days. Irradiation times and counting intervals were chosen to minimize saturation and decay effects. The experimental data were used to calculate 100 energy bin distributions of the absolute number of photons/fission-sec. by means of absolute calibrations of the collimated NaI(T1) detector. The number of fissions in each sample was determined radiochemically. Machine computation was used extensively.
Author : Terry Michael Richardson
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (49 download)
Download or read book Neutron Induced Fission of U238 and the Moderation Effect of Paraffin on Fast Neutrons written by Terry Michael Richardson and published by . This book was released on 1978 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Richard Lilley
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (417 download)
Download or read book An Analysis of the Effects of Fast Neutron-induced Fission in a Two-region Nuclear Reactor Fuel Element written by John Richard Lilley and published by . This book was released on 1962 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of Prompt [average Neutrons] in Fast Neutron Fission of U238 Induced by Neutrons from 1.5 to 15 MeV PDF Online Free](https://books.google.com/books/content/images/frontcover/9938uQEACAAJ?fife=w200-h370)
Author : I. Asplund-Nilsson
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (13 download)
Download or read book Measurement of Prompt [average Neutrons] in Fast Neutron Fission of U238 Induced by Neutrons from 1.5 to 15 MeV written by I. Asplund-Nilsson and published by . This book was released on 1964 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Leland R. Bunney
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (669 download)
Download or read book Gamma-ray Spectra of the Products of Fast Neutron Fission of Uranium-235 and Uranium-238 at Selected Times After Fission written by Leland R. Bunney and published by . This book was released on 1966 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental measurements of the gamma-ray pulse height distributions due to the products of fast-neutron-induced fission of Uranium-235 and Uranium-238 are presented. The measurements were made at nine selected times after fission from 15 minutes to 3 days. Irradiation times and counting intervals were chosen to minimize saturation and decay effects. The experimental data were used to calculate 100 energy bin distributions of the absolute number of photons/fission-sec. by means of absolute calibrations of the collimated NaI(T1) detector. The number of fissions in each sample was determined radiochemically. Machine computation was used extensively.
Author : Jean Galy
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (116 download)
Download or read book Investigation of the Fission Yields of the Fast Neutron-induced Fission Off 233U written by Jean Galy and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fast-neutron-induced Fission Studied by Gamma-spectroscopy written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Prompt gamma-ray and x-ray spectroscopy techniques are being employed to study fast-neutron-induced fission of actinides to determine independent (pre-beta-decay) yields for a wide range of product nuclides. Data are acquired using the GEANIE high-resolution gamma-ray spectrometer at the LANSCE/WNR unmoderated spallation neutron source providing neutrons with energies from below 1 MeV to over 400 MeV. Three different techniques (identification by characteristic gamma rays, by gamma-gamma coincidences, and by fission-gamma coincidences) are being used to gather complementary data sets from which detailed fission yields can be extracted. From these data, mass and charge distributions are determined over a wide incident-neutron energy range. The phenomena of interest include the transition from asymmetric to symmetric fission, the competition between neutron and gamma-ray emission, nuclear structure effects in fission and the angular momentum imparted to the fission products. Results for 238U and 236U are presented.
Author : Knox McLeod Broom
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (913 download)
Download or read book 14.5 Mev Neutron-induced Fission of U238 written by Knox McLeod Broom and published by . This book was released on 1961 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dana L. Duke
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (933 download)
Download or read book Fission Fragment Mass Distributions and Total Kinetic Energy Release of 235-uranium and 238-uranium in Neutron-induced Fission at Intermediate and Fast Neutron Energies LA-UR-15-28829 written by Dana L. Duke and published by . This book was released on 2015 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shyam A. Rao
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (84 download)
Download or read book Distribution of Charge in the Neutron Induced Fission of Th232 and U238 written by Shyam A. Rao and published by . This book was released on 1972 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jean Galy
Publisher :
ISBN 13 :
Total Pages : 207 pages
Book Rating : 4.:/5 (13 download)
Download or read book Investigation of the Fission Yields of the Fast Neutron-induced Fission of 233U written by Jean Galy and published by . This book was released on 1999 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roland Joseph Armani
Publisher :
ISBN 13 :
Total Pages : 53 pages
Book Rating : 4.:/5 (445 download)
Download or read book Fission Yields of 99Mo and 140Ba from Fast Neutron-induced Fission of 239Pu Using Solid-state Track Recorders written by Roland Joseph Armani and published by . This book was released on 1971 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Terry C. Chapman
Publisher :
ISBN 13 :
Total Pages : 79 pages
Book Rating : 4.:/5 (227 download)
Download or read book Fission Product Yields from 6-9 MeV Neutron Induced Fission of 235U and 238U. written by Terry C. Chapman and published by . This book was released on 1977 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: The yields of 28 mass chains have been measured for fission of U235 and U238 induced by neutrons at four different energies from 6.0 to 9.1 MeV. This is the first experimental measurement where sufficient energy resolution was obtained to observe the effect of the onset of second chance fission in the case of symmetric fission. The Ag111 results are compared with measurements at other neutron energies and with previous theoretical predictions. Several of the nuclide results are presented in graphical form and all nuclide are presented in tabular form, as a function of neutron energy. The mass chains measured range from 84 to 156, and their half-lives range from 18 minutes to 30 years. (Author).
Download or read book Active-Interrogation Measurements of Induced-Fission Neutrons from Low-Enriched Uranium written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Protection and control of nuclear fuels is paramount for nuclear security and safeguards; therefore, it is important to develop fast and robust controlling mechanisms to ensure the safety of nuclear fuels. Through both passive- and active-interrogation methods we can use fast-neutron detection to perform real-time measurements of fission neutrons for process monitoring. Active interrogation allows us to use different ranges of incident neutron energy to probe for different isotopes of uranium. With fast-neutron detectors, such as organic liquid scintillation detectors, we can detect the induced-fission neutrons and photons and work towards quantifying a sample's mass and enrichment. Using MCNPX-PoliMi, a system was designed to measure induced-fission neutrons from U-235 and U-238. Measurements were then performed in the summer of 2010 at the Joint Research Centre in Ispra, Italy. Fissions were induced with an associated particle D-T generator and an isotopic Am-Li source. The fission neutrons, as well as neutrons from (n, 2n) and (n, 3n) reactions, were measured with five 5? by 5? EJ-309 organic liquid scintillators. The D-T neutron generator was available as part of a measurement campaign in place by Padova University. The measurement and data-acquisition systems were developed at the University of Michigan utilizing a CAEN V1720 digitizer and pulse-shape discrimination algorithms to differentiate neutron and photon detections. Low-enriched uranium samples of varying mass and enrichment were interrogated. Acquired time-of-flight curves and cross-correlation curves are currently analyzed to draw relationships between detected neutrons and sample mass and enrichment. In the full paper, the promise of active-interrogation measurements and fast-neutron detection will be assessed through the example of this proof-of-concept measurement campaign. Additionally, MCNPX-PoliMi simulation results will be compared to the measured data to validate the MCNPX-PoliMi code when used for active-interrogation simulations.
Author :
Publisher :
ISBN 13 :
Total Pages : 133 pages
Book Rating : 4.:/5 (94 download)
Download or read book Fission Fragment Mass Distributions and Total Kinetic Energy Release of 235-Uranium and 238-Uranium in Neutron-Induced Fission at Intermediate and Fast Neutron Energies written by and published by . This book was released on 2015 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Ph. D. dissertation describes a measurement of the change in mass distributions and average total kinetic energy (TKE) release with increasing incident neutron energy for fission of 235U and 238U. Although fission was discovered over seventy-five years ago, open questions remain about the physics of the fission process. The energy of the incident neutron, En, changes the division of energy release in the resulting fission fragments, however, the details of energy partitioning remain ambiguous because the nucleus is a many-body quantum system. Creating a full theoretical model is difficult and experimental data to validate existing models are lacking. Additional fission measurements will lead to higher-quality models of the fission process, therefore improving applications such as the development of next-generation nuclear reactors and defense. This work also paves the way for precision experiments such as the Time Projection Chamber (TPC) for fission cross section measurements and the Spectrometer for Ion Determination in Fission (SPIDER) for precision mass yields.
Author : H. B. Levy
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (233 download)
Download or read book Radiochemical Studies of Neutron-induced Fission of U235 and U238 the Two-mode Fission Hypothesis written by H. B. Levy and published by . This book was released on 1961 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
