Production rates of 7Be and 10Be in the atmosphere

被引：57

作者：

Nagai, H ^{[1
]}

Tada, W ^{[1
]}

Kobayashi, T ^{[1
]}

机构：

[1] Nihon Univ, Coll Humanities & Sci, Dept Chem, Tokyo 1568550, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2000年 / 172卷

关键词：

production rate; cosmogenic nuclide; Be-7; Be-10; atmosphere;

D O I：

10.1016/S0168-583X(00)00124-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have estimated the production rates of cosmogenic Be-7 and Be-10 in the stratosphere and troposphere using the neutron and proton cross-sections for N-14 and O-16. Th, global average production rates (atoms cm(-2) s(-1)) are 0.041 (Be-7) and 0.018 (Be-10) in the stratosphere and 0.027 (Be-7) and 0.018 (Be-10) in the troposphere for the solar minimum. To convert to long-term average production rates, these values are multiplied by 0.8-0.9. The correlation between these production rates and the observed Be-10/Be-7 ratio in the atmosphere and its seasonal variation is shown using a simple box model calculation with adequate parameters. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：796 / 801

页数：6

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