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The results obtained by studying the background of neutrons produced by cosmic-ray muons in underground experimental facilities intended for rare-event searches and in surrounding rock are presented. The types of this rock may include…

Instrumentation and Detectors · Physics 2017-03-21 K. V. Manukovsky , O. G. Ryazhskaya , N. M. Sobolevsky , A. V. Yudin

Incident neutron energy dependence of delayed neutron yields of uranium and plutonium isotopes is investigated. A summation calculation of decay and fission yield data is employed, and the energy dependence of the latter part is considered…

Nuclear Theory · Physics 2018-03-23 Futoshi Minato

A new empirical formula has been developed that describes the $({\gamma}, n)$ nuclear reaction cross sections for the isotopes with $Z \geq 60$. The results were supported by calculations using TALYS - 1.6, EMPIRE - 3.2.2 nuclear modular…

Nuclear Theory · Physics 2017-04-26 Rajnikant Makwana , S. Mukherjee , Jian-Song Wang , Zhi-Qiang Chen

We identify a new, flux-dependent correction to the antineutrino spectrum as produced in nuclear reactors. The abundance of certain nuclides, whose decay chains produce antineutrinos above the threshold for inverse beta decay, has a…

High Energy Physics - Phenomenology · Physics 2016-03-30 Patrick Huber , Patrick Jaffke

We report a novel correlated background in the antineutrino detection using the inverse beta decay reaction. Spontaneous fissions and $(\alpha,n)$ reactions in peripheral materials of the antineutrino detector, such as borosilicate glass of…

Instrumentation and Detectors · Physics 2021-12-01 Zhiyuan Chen , Xin Zhang , Zeyuan Yu , Jun Cao , Changgen Yang

The measured and evaluated excitation functions are fundamental quantities that affect the accuracy of all calculations in nuclear applications. Some cross sections, such as 14N(n,p)14C, have added value for special applications, as these…

Studying experimental data obtained at ITEP [1] on neutron production in interactions of protons with various nuclei in the energy range from 747 MeV up to 8.1 GeV, we have found that slow neutron spectra have scaling and asymptotic…

High Energy Physics - Phenomenology · Physics 2019-05-01 A. Galoyan , A. Ribon , V. Uzhinsky

The analysis results of the isotopic yields for products obtained in reactions of protons at energies 0.66, 1, 8.1GeV with separated tin isotopes are presented. The experimental data are compared in form of reactions of element cross…

Fission fragment yield evaluation in the past has been done mainly by considering independent and cumulative fission yields. In addition to them, the fission fragment yields are related to various observables such as total kinetic energy,…

Nuclear Theory · Physics 2024-01-17 Futoshi Minato

We present the state-of-the-art single-zone nuclear reaction network WinNet that is capable of calculating the nucleosynthetic yields of a large variety of astrophysical environments and conditions. This ranges from the calculation of the…

Neutrons from ($\alpha$,n) reactions through thorium and uranium decays are important sources of background for direct dark matter detection. The neutron yields and energy spectra from a range of materials that are used to build dark matter…

Nuclear Experiment · Physics 2009-08-05 D. -M. Mei , C. Zhang , A. Hime

Neutrons produced by cosmic ray muons constitute a significant background for underground experiments investigating neutron oscillations, neutrinoless double beta decay, dark matter, and other rare event signals. This work benchmarks…

Instrumentation and Detectors · Physics 2026-01-21 Yijian Jiang , Jie Cheng , Haoqi Lu , Yaoguang Wang

We present calculations of neutron thermal cross sections, Westcott factors, resonance integrals, Maxwellian-averaged cross sections, astrophysical reaction rates, and solar system $r$-process abundances using the latest data from the major…

Nuclear Theory · Physics 2025-03-26 B. Pritychenko

We present a self-consistency analysis of fission product yield evaluations. Anomalous yields are determined using a series of simple conservation checks and comparing charge distributions with common parameterizations. The total prompt…

Nuclear Theory · Physics 2017-09-06 Patrick Jaffke

Estimated cross sections for neutron production from triton bombardment of gold are deduced from measurements of triton interactions with gas targets that used gold as a triton beam stop material. Differential cross sections for production…

Nuclear Experiment · Physics 2016-01-20 Manfred Drosg , Bernard Hoop

Neutron-induced reaction rates, including fission, are calculated in the temperature range 1.d8 <T (K) < 1.d10 within the framework of the statistical model for targets with atomic number 83 < Z < 119 (from Po to Uuo) from the neutron to…

Solar and Stellar Astrophysics · Physics 2015-05-14 I. V. Panov , I. Yu. Korneev , T. Rauscher , G. Martínez-Pinedo , A. Kelić-Heil , N. T. Zinner , F. -K. Thielemann

Present contribution represents a significant improvement of our previous calculation of Maxwellian-averaged cross sections and astrophysical reaction rates. Addition of newly-evaluated neutron reaction libraries, such as ROSFOND and…

Solar and Stellar Astrophysics · Physics 2011-01-11 Boris Pritychenko

Contemporary ultraintense, short-pulse laser systems provide extremely compact setups for the production of high-flux neutron beams, such as those required for nondestructive probing of dense matter, research on neutron-induced damage in…

Nuclear reaction rates of astrophysical applications are traditionally determined on the basis of Hauser-Feshbach reaction codes. These codes adopt a number of approximations that have never been tested, such as a simplified width…

Astrophysics · Physics 2015-05-13 S. Goriely , S. Hilaire , A. J. Koning

Analytical formulae for the calculation of secondary particle yields in p-A interactions are given. These formulae can be of great practical importance for fast calculations of neutrino fluxes and for designing new neutrino beam-lines. The…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Bonesini , A. Marchionni , F. Pietropaolo , T. Tabarelli de Fatis