Be, B, C, O, F, Na, Mg, Al and Si neutron yields from an (?, n) reaction under the effect of thorium and uranium ?-particles and their decay products

Gorshkov, G.V.; Tsvetkov, O. S.

doi:10.1007/bf01119971

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…Neon isotope production from (at,n) reactions was calculated in the usual manner [see, e.g., Gorshkov and Tstvetkov, 1963;Feige et al, 1968] by using measured neutron yields from the (at,n) reactions on the pure element. An appropriate expression for the neutron yield is related to mass-stopping powers of the elements taken at a certain "reference" energy (see Feige et al [1968] and West [1979] Neutron yields for •7,•80 and •9F were taken as production rates for 2ø,21,22Ne in the energy range from 2 to 10 MeV, since other competing reactions such as (at,pn), (at,2n), etc., have either extremely high threshold energies or very low cross sections relative to the (at,n) reactions (discussion on this matter is given by Wetherill [1954]).…”

Section: Reactionsmentioning

confidence: 99%

Production of nucleogenic neon in the Earth from natural radioactive decay

Yatsevich¹,

Honda²

1997

J. Geophys. Res.

174

115

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[1980] and Kyser and Rison [1982]. The present study also has shown that the nucleogenic 2•Ne production from the 24Mg(n,00 reaction is only about one-fifth the previous estimate. The contribution of nucleogenic 21Ne from the 24Mg(n,00 reaction is insignificant compared with nucleogenic 2•Ne production from 180(o•,n). Our estimate of the nucleogenic 2•Ne/radiogenic 4He production ratio both in the mantle and in the crust is 4.5 x 10 -8. This production ratio is quite consistent with nucleogenic 21Ne/radiogenic 4He ratios actually observed in crustal fluid samples ((4.6 + 0.8) x 10-8). The error in calculation of the nucleogenic neon production, resulting from a random statistical variation of the entry neutron yields and cross sections, is estimated to be less than 5%.

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Section: Reactionsmentioning

confidence: 99%

Production of nucleogenic neon in the Earth from natural radioactive decay

Yatsevich¹,

Honda²

1997

J. Geophys. Res.

174

115

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“…Ref. [33] reported direct measurement of neutron yields from uranium and thorium decay chains and the comparison of SOURCES4A output with these data for thorium chain is shown in Figure 6. The calculations are again in very good agreement with measurements.…”

Section: Sources4 Results and Comparison With Other Codes And Experim...mentioning

confidence: 99%

“…FIGURE 6. Neutron yield 232 Th decay chain in several materials as calculated by SOURCES4A in comparison with measurements[33]. Neutron yield is given as the number of neutrons per 10 6 alphas.…”

mentioning

confidence: 99%

Neutron yield calculation from (α, n) reactions with SOURCES4

Kudryavtsev,

Krawczun,

Bocheva

2023

AIP Conference Proceedings

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Neutrons can induce background events in underground experiments looking for rare processes. Neutrons in a MeV range in deep underground laboratories are produced in spontaneous fission processes and (α, n) reactions. A number of computer codes are available to calculate cross-sections of (α, n) reactions, branching ratios to various states and neutron yields. We have used the SOURCES4 code to calculate neutron yields and energy spectra with input cross-sections and branching ratios taken from experimental data and calculations based on EMPIRE2.19/3.2.3 and TALYS1.9. We report here a comparison of SOURCES4 calculations with experimental data obtained with alpha beams with fixed energies.

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“…Ref. [30] reported direct measurement of neutron yields from uranium and thorium decay chains and the comparison of SOURCES4A output with these data for thorium chain is shown in Figure 4. The calculations are again in very good agreement with measurements.…”

Section: Sources4 Results and Comparison With Other Codes And Experim...mentioning

confidence: 99%

Neutron production in ($\alpha$,n) reactions in SOURCES4

Kudryavtsev

Krawczun

Bocheva

2023

SciPost Phys. Proc.

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Neutrons produced in spontaneous fission and (\alpha,nα,n) reactions can induce background events in underground experiments looking for rare processes. A number of computer codes are available to calculate cross-sections of (\alpha,nα,n) reactions, branching ratios to various states and neutron yields. SOURCES4 code has been used in this work to calculate neutron yields and energy spectra with input cross-sections and branching ratios taken from experimental data and models from EMPIRE2.19/3.2.3 and TALYS1.9 codes. A comparison of SOURCES4 calculations with experimental data from alpha beams and radioactive decay chains is presented.

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Be, B, C, O, F, Na, Mg, Al and Si neutron yields from an (?, n) reaction under the effect of thorium and uranium ?-particles and their decay products

Cited by 4 publications

References 10 publications

Production of nucleogenic neon in the Earth from natural radioactive decay

Production of nucleogenic neon in the Earth from natural radioactive decay

Neutron yield calculation from (α, n) reactions with SOURCES4

Neutron production in ($\alpha$,n) reactions in SOURCES4

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