ABSOLUTE CROSS-SECTION FOR D(HE-4, D)HE-4 FORWARD SCATTERING

被引：26

作者：

KELLOCK, AJ

BAGLIN, JEE

机构：

[1] IBM Almaden Research Center, San Jose, CA 95120-6099

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1993年 / 79卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(93)95397-N

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The D(He-4, D)He-4 differential cross section for forward scattering of deuterons by helium ions has been measured, with an estimated precision of +/- 5%, in the range 1-3 MeV at the scattering angles of 20-degrees, 25-degrees, 30-degrees, 35-degrees and 40-degrees. Deuterated polystyrene (C-8D8)n films spun on Si wafers were used for the measurements, enabling the forward scattering cross section to be determined directly with reference to the He-4 backscattering cross section of carbon (which was, in turn, referenced to the Rutherford cross section for He-4 on Cu). The D(He-4, D)4 He cross section exhibits a resonance at 2.135 +/- 0.01 MeV, with approximately 60 keV FWHM, the amplitude of which is strongly dependent on scattering angle. For the rest of the energy range, the cross section is featureless, and can be fitted well by a simple polynomial.

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页码：493 / 497

页数：5

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