An improved calculation for the ionization-excitation of helium

被引：3

作者：

Nagy, L ^{[1
]}

Benedek, A ^{[1
]}

机构：

[1] Univ Babes Bolyai, Fac Phys, R-3400 Cluj Napoca, Romania

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2002年 / 35卷 / 03期

关键词：

D O I：

10.1088/0953-4075/35/3/304

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Cross sections for the ionization-excitation of helium by fast charged-particle impact are calculated using the impact-parameter method and second-order perturbation theory. The inclusion of the two-step I mechanism in the calculations considerably improves our previous results. The dependence of the cross sections on the sign of the projectile charge is also investigated.

引用

页码：491 / 499

页数：9

共 15 条

[1] CROSS-SECTIONS FOR THE IONIZATION-EXCITATION OF HELIUM BY FAST ELECTRONS AND H+, H-2(+) AND H-3(+) IONS - (NP) P-2(0) LEVELS, N=2-5
BAILEY, M
BRUCH, R
RAUSCHER, E
BLIMAN, S
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1995, 28 (13) : 2655 - 2670
[2] Simultaneous excitation-ionization of helium to the He+(2p) state
Dogan, M
Crowe, A
Bartschat, K
Marchalant, PJ
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1998, 31 (07) : 1611 - 1624
[3] Convergent second-order calculations for simultaneous electron-impact ionization-excitation of helium
Fang, YH
Bartschat, K
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2001, 34 (02) : L19 - L25
[4] ABSOLUTE ELECTRON-IMPACT EMISSION CROSS-SECTION OF THE HE+ 22P-] 12S LINE AT 304-A PRODUCED BY SIMULTANEOUS IONIZATION EXCITATION
FORAND, JL
BECKER, K
MCCONKEY, JW
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1985, 18 (07) : 1409 - 1418
[5] ELECTRON-IMPACT IONIZATION-EXCITATION CROSS-SECTIONS OF HELIUM
FRANZ, A
ALTICK, PL
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1995, 28 (21) : 4639 - 4649
[6] Kuplyauskene A. V., 1991, Optics and Spectroscopy, V71, P127
[7] First and second Born calculations of (e, 2e) excitation-ionization of helium
Marchalant, PJ
Rasch, J
Whelan, CT
Madison, DH
Walters, HRJ
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1999, 32 (24) : L705 - L710
[8] Excitation-ionization of helium to He+(n=2) at 365.8 eV
Marchalant, PJ
Rouvellou, B
Rasch, J
Rioual, S
Whelan, CT
Pochat, A
Madison, DH
Walters, HRJ
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2000, 33 (20) : L749 - L754
[9] MCGUIRE JH, 1991, ADV ATOM MOL OPT PHY, V29, P217
[10] Ionization-excitation of helium into the np (n = 2-5) states
Nagy, L
Mezei, JZ
[J]. PHYSICS LETTERS A, 1999, 252 (06) : 321 - 327

← 1 2 →