ABSOLUTE SURFACE CARBON COVERAGE DETERMINATION VIA THE C-12(HE-3,P)N-14 REACTION

被引:11
|
作者
TONG, SY
LENNARD, WN
ALKEMADE, PFA
MITCHELL, IV
机构
[1] Department of Physics. Interface Science Western, The University of Western Ontario., London
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1016/0168-583X(90)90791-R
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Absolute cross sections for the 12C(3He, p)14N nuclear reaction have been measured at E(3He) ≈ 2.4 MeV with a precision of 4-5% for angles in the range 86° ≤ θlab ≤ 151°. The total cross section summed over po, p1 and p2 varies from 5 to 7 mb/sr in the angular range studied. Due to its high Q-value, this reaction provides a useful alternative to the familiar 12C(d, p)13C reaction for measuring submonolayer surface carbon coverage. This approach is of particular advantage for low-atomic-number substrates (e.g. Al, Si) which otherwise give rise to interfering reaction products. © 1990.
引用
收藏
页码:91 / 94
页数:4
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