Effect of tunneling ionization on dynamic alignment and post-ionization alignment of nitrogen molecules irradiated by different laser intensities

被引：1

作者：

Jiang, Xingshan ^{[1
]}

Wu, Hongchun ^{[1
]}

Huang, Bomin ^{[1
]}

Chen, Jianxin ^{[1
]}

Zhuo, Shuangmu ^{[1
]}

机构：

[1] Fujian Normal Univ, Inst Laser & Optoelect Technol, Fujian Prov Key Lab Photon Technol, Key Lab OptoElect Sci & Technol Med,Minist Educ, Fuzhou 350007, Peoples R China

来源：

OPTIK | 2010年 / 121卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Tunneling ionization; Post-ionization alignment; Dynamic alignment; MULTIELECTRON DISSOCIATIVE IONIZATION; DIATOMIC-MOLECULES; COULOMB EXPLOSION; FIELD-IONIZATION; PHOTODISSOCIATION; ORIENTATION; PICOSECOND; CLUSTERS; PULSES; IODINE;

D O I：

10.1016/j.ijleo.2009.01.003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The dynamic alignment and post-ionization alignment of nitrogen molecules are investigated while considering, the effect of tunneling ionization. The effects of tunneling ionization on the angular distribution are calculated when the molecules are irradiated by different laser intensities. The results show that laser intensity directly affects the time and extent of dynamic alignment. Furthermore, the extent of post-ionization alignment is not only determined by laser intensity but also affected by the final extent of dynamic alignment. The post-ionization alignment will dominate during the process of molecular (or molecular ion) rotational alignment for femtosecond laser pulse. The time of tunneling ionization is a significant factor to the final ensemble angular distribution of molecular ions when laser intensity is low. (C) 2009 Elsevier GmbH. All rights reserved.

引用

页码：1219 / 1225

页数：7

共 33 条

[1] Ammosov M. V., 1986, Soviet Physics - JETP, V64, P1191
[2] Propensity of molecules to spatially align in intense light fields
Banerjee, S
Mathur, D
Kumar, GR
[J]. PHYSICAL REVIEW A, 2001, 63 (04): : 1 - 4
[3] Time-dependent alignment and orientation of molecules in combined electrostatic and pulsed nonresonant laser fields
Cai, L
Marango, J
Friedrich, B
[J]. PHYSICAL REVIEW LETTERS, 2001, 86 (05) : 775 - 778
[4] Two-step Coulomb explosions of diatoms in intense laser fields
Chelkowski, S
Bandrauk, AD
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1995, 28 (23) : L723 - L731
[5] Characteristics of dynamic alignment for diatomic and linear triatomic molecules in intense femtosecond laser fields
Chen, JX
Li, XF
[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 2005, 243 (02) : 155 - 161
[6] MOLECULAR-REORIENTATION DURING DISSOCIATIVE MULTIPHOTON IONIZATION
DIETRICH, P
STRICKLAND, DT
LABERGE, M
CORKUM, PB
[J]. PHYSICAL REVIEW A, 1993, 47 (03): : 2305 - 2311
[7] Laser-induced alignment dynamics of HCN: Roles of the permanent dipole moment and the polarizability
Dion, CM
Keller, A
Atabek, O
Bandrauk, AD
[J]. PHYSICAL REVIEW A, 1999, 59 (02): : 1382 - 1391
[8] DION CM, 2002, PHYS REV A, V47
[9] FEMTOSECOND DYNAMICS OF MULTIELECTRON DISSOCIATIVE IONIZATION BY USE OF PICOSECOND LASER
FRASINSKI, LJ
CODLING, K
HATHERLY, P
BARR, J
ROSS, IN
TONER, WT
[J]. PHYSICAL REVIEW LETTERS, 1987, 58 (23) : 2424 - 2427
[10] ALIGNMENT AND TRAPPING OF MOLECULES IN INTENSE LASER FIELDS
FRIEDRICH, B
HERSCHBACH, D
[J]. PHYSICAL REVIEW LETTERS, 1995, 74 (23) : 4623 - 4626

← 1 2 3 4 →