原子与分子物理学报2011，Vol.28Issue(5)：899-902,4.DOI:10.3969/j.issn.1000-0364.2011.05.019
强激光场中氢负离子双光子电离能量谱的研究
Study on the energy spectrum of H-ion double-photon ionization in an intense laser field using strong field approximation method
摘要
Abstract
We studied the energy spectrum of H ion double-photon ionization in an intense laser field u-sing strong field approximation(SFA) method. Our results show that angular distributions of the energy spectrum for H~ ion during the ionization process is good agreement with experimental data. Further investigation shows that the energy spectrum of H" ion double-photon ionization during the ionization process in a laser field is relative to the ponderomotive potential of electron. The ponderomotive potential of photoelectron is large when the laser intensity is high, thus the position of energy spectrum peak for the high laser intensity is shifted to low energy clearly. Our results show that SFA is a good method for investigate ionization of negative ions in an intense laser field.关键词
强激光场/双光子电离能量谱/强场近似/氢负离子Key words
intense laser field, energy spectrum of double-photon ionization,strong field approximation, negative hydrogen ion分类
数理科学引用本文复制引用
王翔,王国利,周效信..强激光场中氢负离子双光子电离能量谱的研究[J].原子与分子物理学报,2011,28(5):899-902,4.基金项目
国家自然科学基金(11044007,11064013) （11044007,11064013）
高等学校博士学科点专项科研基金(20096203110001) （20096203110001）
西北师范大学创新项目(NWNU-KJCXGC-03-62) （NWNU-KJCXGC-03-62）
