Femtosecond Rotational Dynamics of D2 Molecules in Superfluid Helium Nanodroplets

被引：15

作者：

Qiang, Junjie ^{[1
]}

Zhou, Lianrong ^{[1
]}

Lu, Peifen ^{[1
]}

Lin, Kang ^{[1
]}

Ma, Yongzhe ^{[1
]}

Pan, Shengzhe ^{[1
]}

Lu, Chenxu ^{[1
]}

Jiang, Wenyu ^{[1
]}

Sun, Fenghao ^{[1
]}

Zhang, Wenbin ^{[1
]}

Li, Hui ^{[1
]}

Gong, Xiaochun ^{[1
]}

Averbukh, Ilya Sh ^{[2
,3
]}

Prior, Yehiam ^{[1
,2
,3
]}

Schouder, Constant A. ^{[4
]}

Stapelfeldt, Henrik ^{[4
]}

Cherepanov, Igor N. ^{[5
]}

Lemeshko, Mikhail ^{[5
]}

Jaeger, Wolfgang ^{[6
]}

Wu, Jian ^{[1
,7
,8
]}

机构：

[1] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200241, Peoples R China

[2] Weizmann Inst Sci, AMOS, IL-76100 Rehovot, Israel

[3] Weizmann Inst Sci, Dept Chem & Biol Phys, IL-76100 Rehovot, Israel

[4] Aarhus Univ, Dept Chem, Langelandsgade 140, DK-8000 Aarhus C, Denmark

[5] IST Austria, Campus 1, A-3400 Klosterneuburg, Austria

[6] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada

[7] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China

[8] CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 24期

基金：

国家重点研发计划; 欧洲研究理事会;

关键词：

ORTHO-PARA CONVERSION; MOMENTUM SPECTROSCOPY; RECOIL-ION; SPECTRUM; LIQUID;

D O I：

10.1103/PhysRevLett.128.243201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Rotational dynamics of D-2 molecules inside helium nanodroplets is induced by a moderately intense femtosecond pump pulse and measured as a function of time by recording the yield of HeD+ ions, created through strong-field dissociative ionization with a delayed femtosecond probe pulse. The yield oscillates with a period of 185 fs, reflecting field-free rotational wave packet dynamics, and the oscillation persists for more than 500 periods. Within the experimental uncertainty, the rotational constant B-He of the in-droplet D-2 molecule, determined by Fourier analysis, is the same as B-gas for an isolated D-2 molecule. Our observations show that the 132 molecules inside helium nanodroplets essentially rotate as free D-2 molecules.

引用

页数：7

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