Double ionization of He by ion impact: Second-order contributions to the fully differential cross section

被引：5
作者：
Lopez, S. D. [1 ,2 ]
Otranto, S. [3 ,4 ]
Garibotti, C. R. [1 ,2 ]
机构：
[1] Consejo Nacl Invest Cient & Tecn, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
[2] Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
[3] Univ Nacl Sur, IFISUR, RA-8000 Bahia Blanca, Buenos Aires, Argentina
[4] Univ Nacl Sur, Dept Fis, RA-8000 Bahia Blanca, Buenos Aires, Argentina
来源：
PHYSICAL REVIEW A | 2014年 / 89卷 / 06期
关键词：
DOUBLE-ELECTRON-CAPTURE; 2ND BORN APPROXIMATION; EXCITATION-IONIZATION; SINGLE IONIZATION; ATOMIC-HYDROGEN; HELIUM; PROTONS; SCATTERING; COLLISIONS; CONTINUUM;
D O I：
10.1103/PhysRevA.89.062709
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this work, we present a second-order Born series treatment for the double ionization of He by ion impact. In particular, we show that the well-known independent events and independent electron models naturally result from an on-shell treatment for the second-order Born approximation. A transition amplitude which coherently includes first-and second-order terms in the projectile interaction is introduced to study the role of the two-step-1, shake-off, and two-step-2 mechanisms at different impact energies. Fully differential cross sections for proton and antiproton impact are presented and analyzed for different projectile momentum transfers.
引用
收藏
页数：11
相关论文
共 58 条
[1]  
Berakdar J, 1996, PHYS REV A, V53, P2314, DOI 10.1103/PhysRevA.53.2314
[2]   Correlated scattering states of N-body Coulomb systems [J].
Berakdar, J .
PHYSICAL REVIEW A, 1997, 55 (03) :1994-2003
[3]   Multi-ionization of helium and lithium using the independent electron and independent event models with intrinsic CDW [J].
Bradley, J ;
Lee, RJS ;
McCartney, M ;
Crothers, DSF .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2004, 37 (18) :3723-3734
[4]   ON THE 2ND BORN APPROXIMATION FOR THE IONIZATION OF ATOMIC-HYDROGEN AND HELIUM BY FAST ELECTRONS [J].
BYRON, FW ;
JOACHAIN, CJ ;
PIRAUX, B .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1982, 15 (08) :L293-L296
[5]   TRIPLE DIFFERENTIAL CROSS-SECTIONS FOR THE IONIZATION OF ATOMIC-HYDROGEN BY FAST ELECTRONS - A 2ND BORN TREATMENT [J].
BYRON, FW ;
JOACHAIN, CJ ;
PIRAUX, B .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1980, 13 (22) :L673-L676
[6]   IMPORTANCE OF 2ND-ORDER EFFECTS IN LARGE-ANGLE, CO-PLANAR SYMMETRIC (E,2E) TRIPLE DIFFERENTIAL CROSS-SECTIONS [J].
BYRON, FW ;
JOACHAIN, CJ ;
PIRAUX, B .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1983, 16 (24) :L769-L774
[7]   Experimental and theoretical confirmation of the role of higher order mechanisms in the electron impact double ionization of helium [J].
Casagrande, E. M. Staicu ;
Li, C. ;
Lahmam-Bennani, A. ;
Dal Cappello, C. ;
Schulz, M. ;
Ciappina, M. .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2011, 44 (05)
[8]   Monte Carlo event generators in atomic collisions: A new tool to tackle the few-body dynamics [J].
Ciappina, M. F. ;
Kirchner, T. ;
Schulz, M. .
COMPUTER PHYSICS COMMUNICATIONS, 2010, 181 (04) :813-820
[9]   Double ionization of helium by ion impact analyzed using four-body Dalitz plots [J].
Ciappina, M. F. ;
Schulz, M. ;
Kirchner, T. ;
Fischer, D. ;
Moshammer, R. ;
Ullrich, J. .
PHYSICAL REVIEW A, 2008, 77 (06)
[10]  
Clementi E., 1974, Atomic Data and Nuclear Data Tables, V14, P177, DOI 10.1016/S0092-640X(74)80016-1
123456