Photonuclear channel of 7Be production in the Earth's atmosphere

M. V. Bezuglov; V. S. Malyshevsky; T. V. Malykhina; A. V. Torgovkin; G. V. Fomin; B. I. Shramenko

doi:10.1134/S1063778812030040

Photonuclear channel of ⁷Be production in the Earth's atmosphere

M. V. Bezuglov, V. S. Malyshevsky, T. V. Malykhina, A. V. Torgovkin, G. V. Fomin, B. I. Shramenko

Not published at Aalto University

Research output: Contribution to journal › Article › Scientific › peer-review

4 Citations (Scopus)

Abstract

Measurements of average values of cross sections for the A(γ,X)⁷Be photonuclear reactions on nitrogen, oxygen, and carbon of natural isotopic composition were performed in the energy range from the threshold to 90 MeV. On the basis of the measured cross sections for ⁷Be photoproduction and on the basis of the results obtained by simulating the nuclear-electromagnetic cascade in the Earth's atmosphere, the contribution of the photonuclear mechanism to the production of the cosmogenic radioisotope ⁷Be in the atmosphere and its latitude dependence were investigated for the first time. It is shown that the contribution of the photonuclear mechanism is commensurate with the contribution of the proton and neutron mechanisms of ⁷Be production in the atmosphere and that the inclusion of this mechanism is mandatory in analyzing the accumulation and transfer of ⁷Be in the planetary boundary layer.

Original language	English
Pages (from-to)	393-397
Number of pages	5
Journal	Physics of Atomic Nuclei
Volume	75
Issue number	4
DOIs	https://doi.org/10.1134/S1063778812030040
Publication status	Published - Apr 2012
MoE publication type	A1 Journal article-refereed

Access to Document

10.1134/S1063778812030040

Cite this

@article{f334b91a21244529a95017275dc59c51,

title = "Photonuclear channel of 7Be production in the Earth's atmosphere",

abstract = "Measurements of average values of cross sections for the A(γ,X)7Be photonuclear reactions on nitrogen, oxygen, and carbon of natural isotopic composition were performed in the energy range from the threshold to 90 MeV. On the basis of the measured cross sections for 7Be photoproduction and on the basis of the results obtained by simulating the nuclear-electromagnetic cascade in the Earth's atmosphere, the contribution of the photonuclear mechanism to the production of the cosmogenic radioisotope 7Be in the atmosphere and its latitude dependence were investigated for the first time. It is shown that the contribution of the photonuclear mechanism is commensurate with the contribution of the proton and neutron mechanisms of 7Be production in the atmosphere and that the inclusion of this mechanism is mandatory in analyzing the accumulation and transfer of 7Be in the planetary boundary layer.",

author = "Bezuglov, {M. V.} and Malyshevsky, {V. S.} and Malykhina, {T. V.} and Torgovkin, {A. V.} and Fomin, {G. V.} and Shramenko, {B. I.}",

year = "2012",

month = apr,

doi = "10.1134/S1063778812030040",

language = "English",

volume = "75",

pages = "393--397",

journal = "Physics of Atomic Nuclei",

issn = "1063-7788",

publisher = "MAIK Nauka/Interperiodica",

number = "4",

}

TY - JOUR

T1 - Photonuclear channel of 7Be production in the Earth's atmosphere

AU - Bezuglov, M. V.

AU - Malyshevsky, V. S.

AU - Malykhina, T. V.

AU - Torgovkin, A. V.

AU - Fomin, G. V.

AU - Shramenko, B. I.

PY - 2012/4

Y1 - 2012/4

N2 - Measurements of average values of cross sections for the A(γ,X)7Be photonuclear reactions on nitrogen, oxygen, and carbon of natural isotopic composition were performed in the energy range from the threshold to 90 MeV. On the basis of the measured cross sections for 7Be photoproduction and on the basis of the results obtained by simulating the nuclear-electromagnetic cascade in the Earth's atmosphere, the contribution of the photonuclear mechanism to the production of the cosmogenic radioisotope 7Be in the atmosphere and its latitude dependence were investigated for the first time. It is shown that the contribution of the photonuclear mechanism is commensurate with the contribution of the proton and neutron mechanisms of 7Be production in the atmosphere and that the inclusion of this mechanism is mandatory in analyzing the accumulation and transfer of 7Be in the planetary boundary layer.

AB - Measurements of average values of cross sections for the A(γ,X)7Be photonuclear reactions on nitrogen, oxygen, and carbon of natural isotopic composition were performed in the energy range from the threshold to 90 MeV. On the basis of the measured cross sections for 7Be photoproduction and on the basis of the results obtained by simulating the nuclear-electromagnetic cascade in the Earth's atmosphere, the contribution of the photonuclear mechanism to the production of the cosmogenic radioisotope 7Be in the atmosphere and its latitude dependence were investigated for the first time. It is shown that the contribution of the photonuclear mechanism is commensurate with the contribution of the proton and neutron mechanisms of 7Be production in the atmosphere and that the inclusion of this mechanism is mandatory in analyzing the accumulation and transfer of 7Be in the planetary boundary layer.

UR - http://www.scopus.com/inward/record.url?scp=84873864943&partnerID=8YFLogxK

U2 - 10.1134/S1063778812030040

DO - 10.1134/S1063778812030040

M3 - Article

AN - SCOPUS:84873864943

SN - 1063-7788

VL - 75

SP - 393

EP - 397

JO - Physics of Atomic Nuclei

JF - Physics of Atomic Nuclei

IS - 4

ER -

Photonuclear channel of ⁷Be production in the Earth's atmosphere

Abstract

Access to Document

Other files and links

Fingerprint

Cite this