Projectile coherence effects in single ionization of helium

被引：47

作者：

Wang, X. ^{[1
,2
]}

Schneider, K. ^{[1
]}

LaForge, A. ^{[1
]}

Kelkar, A. ^{[1
]}

Grieser, M. ^{[1
]}

Moshammer, R. ^{[1
]}

Ullrich, J. ^{[1
,3
]}

Schulz, M. ^{[4
,5
,6
]}

Fischer, D. ^{[1
]}

机构：

[1] Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany

[2] Fudan Univ, Inst Modern Phys, Shanghai EBIT Lab, Shanghai 200433, Peoples R China

[3] Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany

[4] Missouri Univ Sci & Technol, Dept Phys, Rolla, MO 65409 USA

[5] Missouri Univ Sci & Technol, LAMOR, Rolla, MO 65409 USA

[6] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2012年 / 45卷 / 21期

基金：

美国国家科学基金会;

关键词：

DIFFERENTIAL CROSS-SECTIONS; SCATTERING; IMPACT; IONS;

D O I：

10.1088/0953-4075/45/21/211001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have measured fully differential cross sections for ionization of He by 3 MeV proton impact. A projectile beam with a coherence length larger than typical atomic scales was prepared at the Test Storage Ring taking advantage of electron cooling. Pronounced effects due to the projectile coherence are observed which are absent for an incoherent 100 MeV u(-1) C6+ projectile beam and the present data are in much better agreement with theory. Thus, these results represent a major advancement in resolving the so far unexplained discrepancies between experiment and theory for the 100 MeV u(-1) C6+ case.

引用

页数：6

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