Investigation of neutron spectrum emitted from 44 GeV 12C+Cu interactions with nuclear emulsion

Wang, Y.-L.; Guo, Shi-Lun; Tu, Cheng; Liu, Y.-L.; Zheng, Wei; Hu, Xuanwen; Brandt, R.; Vater, P.; Bradnová, V.; Butsev, V.S.; Krivopustov, M.I.; Kulakov, B.A.

doi:10.1016/s1350-4487(97)00079-6

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Neutron induced interactions were studied by this collaboration over a wide energy range: Wang et al [17] studied the integral neutron energy spectra emitted from "Gamma-2" with the nuclear emulsion technique. They measured secondary neutrons with energies up to 1 GeV.…”

Section: Physics Research Internationalmentioning

confidence: 99%

Neutron Production in Thick Targets Irradiated with High-Energy Ions

Hashemi-Nezhad

Zamani-Valasiadou

Krivopustov

et al. 2011

Physics Research International

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The neutron production in thick targets irradiated with 1 GeV protons was studied experimentally, and results are well understood with model calculations, including MCNPX 2.7a. However, one observes very large neutron production rates in the interaction of 44 GeV 12C onto thick Cu-, Pb-, and U-targets beyond calculated rates. The experimental spallation product yield curve in a 20 cm thick Cu target irradiated with 72 GeV 40Ar also cannot be reproduced by several model codes, including MCNPX 2.7a. This may be due to secondary fragments produced in high energy ( GeV) heavy-ion interactions which destroy target nuclei more effectively than primary ions. These observed experimental facts constitute “unresolved problems” from a fundamental point of view. It may have an impact on radiation protection issues for future heavy-ion accelerators.

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Section: Physics Research Internationalmentioning

confidence: 99%

Neutron Production in Thick Targets Irradiated with High-Energy Ions

Hashemi-Nezhad

Zamani-Valasiadou

Krivopustov

et al. 2011

Physics Research International

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Investigation of Nuclear Emulsions in Terms of Neutron Dosimetry

Lužová

Zaitsev

Bradnová

et al. 2019

Radiation Protection Dosimetry

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Neutron detection using nuclear emulsions can offer an alternative in personal dosimetry. The production of emulsions and their quality have to be well controlled with respect to their application in dosimetry. Nuclear emulsions consist mainly of gelatin and silver halide. Gelatin contains a significant amount of hydrogen, which can be used for fast neutron detection. The addition of B-10 in the emulsion is convenient for thermal neutron detection. In this paper, standard nuclear emulsions BR-2 and nuclear emulsions BR-2 enriched with boron produced at the Slavich Company, Russia, were applied for evaluation of fast and thermal neutron fluences. The results were obtained by calculation from the presumed emulsion composition without prior calibration. Evidence that nuclear emulsions used in the experiment are suitable for neutron dosimetry is provided.

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Accelerator driven systems for transmutation and energy production: challenges and dangers

2004

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Accelerator Driven Systems (ADS) are an old technological idea: Relativistic proton accelerators deliver their beams onto massive heavy element targets, thus producing abundant neutron fluences. Placing this target into sub-critical nuclear fission assemblies is yielding substantial fission reactions, thus additional fission energy (Rubbia called such a system “Energy Amplifier”). This technology has recently attracted considerable attention due to advances in the construction of powerful accelerators. It allows the safe and cheap production of nuclear energy simultaneously with the destruction (Transmutation) of long lived radioactive waste, in particular plutonium and other minor actinides (neptunium and americium). The principles and the present-state-of-the-art are described, including first experiments to transmute plutonium this way. This technology needs, however, many more years of further “research and development” before large scale ADS's can be constructed. It may be even necessary to investigate the question, if all basic physics phenomena of this technology are already sufficiently well understood.

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Investigation of neutron spectrum emitted from 44 GeV 12C+Cu interactions with nuclear emulsion

Cited by 3 publications

References 4 publications

Neutron Production in Thick Targets Irradiated with High-Energy Ions

Neutron Production in Thick Targets Irradiated with High-Energy Ions

Investigation of Nuclear Emulsions in Terms of Neutron Dosimetry

Accelerator driven systems for transmutation and energy production: challenges and dangers

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