Constraining calculations of 239Pu(n, γ) cross sections with multistep cascade γ-ray spectra measured at the DANCE facility
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10509727" target="_blank" >RIV/00216208:11320/25:10509727 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=K.-4YhkwWm" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=K.-4YhkwWm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.111.024610" target="_blank" >10.1103/PhysRevC.111.024610</a>
Alternative languages
Result language
angličtina
Original language name
Constraining calculations of 239Pu(n, γ) cross sections with multistep cascade γ-ray spectra measured at the DANCE facility
Original language description
Measurements of multistep cascade gamma-ray spectra from several low-lying 1+ resonances in the 239Pu(n, gamma ) reaction were made using the DANCE detector. The measured spectra are compared to spectra simulated using several models for the photon strength function and the nuclear level density, representing the first analysis of this nature on a fissile nucleus. In general, models of the photon strength function that included a strong M1 "scissors mode" contribution coupled with a Gilbert-Cameron nuclear level density provided a reasonable description of the spectra. Simulations using photon strength functions and nuclear level densities specifically for 240Pu, extracted by the Oslo method, resulted in a very good representation of the measured spectra. Neutron-capture cross section calculations that included the scissors mode provided a good estimate of the previously measured values, without additional normalization. However, the scissors-mode energy that produced the best description of the multistep cascade spectra was different from the value that best reproduced the capture cross section. In addition, the (Gamma gamma ) inferred from the multistep cascade calculations was somewhat less than the tabulated value, which was determined from resonance analysis.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences
Result continuities
Project
<a href="/en/project/GA23-06439S" target="_blank" >GA23-06439S: Collective dynamics of nuclear electromagnetic excitations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review C
ISSN
2469-9985
e-ISSN
2469-9993
Volume of the periodical
111
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
024610
UT code for WoS article
001452574300002
EID of the result in the Scopus database
2-s2.0-85217747888