Ion yields of laser aligned CH3I and CH3Br from multiple orbitals

Lanhai He; Yun Pan; Yujun Yang; Sizuo Luo; Chunjing Lu; Huifang Zhao; Dongxu Li; Lele Song; Steven Stolte; Dajun Ding; Wim G. Roeterdink

doi:10.1016/j.cplett.2016.10.066

Ion yields of laser aligned CH₃I and CH₃Br from multiple orbitals

Lanhai He, Yun Pan, Yujun Yang, Sizuo Luo, Chunjing Lu, Huifang Zhao, Dongxu Li, Lele Song, Steven Stolte, Dajun Ding^*, Wim G. Roeterdink

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

We have measured the alignment influence on ion yields of CH₃I and CH₃Br molecules in the laser intensity regime from 10¹³ W/cm² to 10¹⁵ W/cm². The hexapole state-selection technique combined with laser induced alignment has been employed to obtain aligned (〈P₂(cosθ)〉=0.7) and anti-aligned (〈P₂(cosθ)〉=-0.1) CH₃I and CH₃Br molecules. The ratio of saturation intensities observed for the CH₃I and CH₃Br molecules with different alignments are simulated using a modified PPT model for molecules considering different orbitals and a good agreement has been achieved, indicating the contribution from multiple orbitals in the ionization.

Original language	English
Pages (from-to)	141-146
Number of pages	6
Journal	Chemical Physics Letters
Volume	665
DOIs	https://doi.org/10.1016/j.cplett.2016.10.066
Publication status	Published - 16 Nov 2016

Keywords

Ionization
Molecular alignment
PPT theory
Saturation intensity

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@article{6b66c788cfa54eb99812c9830f57360f,

title = "Ion yields of laser aligned CH3I and CH3Br from multiple orbitals",

abstract = "We have measured the alignment influence on ion yields of CH3I and CH3Br molecules in the laser intensity regime from 1013 W/cm2 to 1015 W/cm2. The hexapole state-selection technique combined with laser induced alignment has been employed to obtain aligned (〈P2(cosθ)〉=0.7) and anti-aligned (〈P2(cosθ)〉=-0.1) CH3I and CH3Br molecules. The ratio of saturation intensities observed for the CH3I and CH3Br molecules with different alignments are simulated using a modified PPT model for molecules considering different orbitals and a good agreement has been achieved, indicating the contribution from multiple orbitals in the ionization.",

keywords = "Ionization, Molecular alignment, PPT theory, Saturation intensity",

author = "Lanhai He and Yun Pan and Yujun Yang and Sizuo Luo and Chunjing Lu and Huifang Zhao and Dongxu Li and Lele Song and Steven Stolte and Dajun Ding and Roeterdink, {Wim G.}",

year = "2016",

month = nov,

day = "16",

doi = "10.1016/j.cplett.2016.10.066",

language = "English",

volume = "665",

pages = "141--146",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

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TY - JOUR

T1 - Ion yields of laser aligned CH3I and CH3Br from multiple orbitals

AU - He, Lanhai

AU - Pan, Yun

AU - Yang, Yujun

AU - Luo, Sizuo

AU - Lu, Chunjing

AU - Zhao, Huifang

AU - Li, Dongxu

AU - Song, Lele

AU - Stolte, Steven

AU - Ding, Dajun

AU - Roeterdink, Wim G.

PY - 2016/11/16

Y1 - 2016/11/16

N2 - We have measured the alignment influence on ion yields of CH3I and CH3Br molecules in the laser intensity regime from 1013 W/cm2 to 1015 W/cm2. The hexapole state-selection technique combined with laser induced alignment has been employed to obtain aligned (〈P2(cosθ)〉=0.7) and anti-aligned (〈P2(cosθ)〉=-0.1) CH3I and CH3Br molecules. The ratio of saturation intensities observed for the CH3I and CH3Br molecules with different alignments are simulated using a modified PPT model for molecules considering different orbitals and a good agreement has been achieved, indicating the contribution from multiple orbitals in the ionization.

AB - We have measured the alignment influence on ion yields of CH3I and CH3Br molecules in the laser intensity regime from 1013 W/cm2 to 1015 W/cm2. The hexapole state-selection technique combined with laser induced alignment has been employed to obtain aligned (〈P2(cosθ)〉=0.7) and anti-aligned (〈P2(cosθ)〉=-0.1) CH3I and CH3Br molecules. The ratio of saturation intensities observed for the CH3I and CH3Br molecules with different alignments are simulated using a modified PPT model for molecules considering different orbitals and a good agreement has been achieved, indicating the contribution from multiple orbitals in the ionization.

KW - Ionization

KW - Molecular alignment

KW - PPT theory

KW - Saturation intensity

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U2 - 10.1016/j.cplett.2016.10.066

DO - 10.1016/j.cplett.2016.10.066

M3 - Article

AN - SCOPUS:84994711789

SN - 0009-2614

VL - 665

SP - 141

EP - 146

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -