Hyperfine-Structure-Induced Depolarization of Impulsively Aligned I-2 Molecules

Esben Folger Thomas; Anders A. Sondergaard; Benjamin Shepperson; Niels Engholm Henriksen; Henrik Stapelfeldt

doi:10.1103/PhysRevLett.120.163202

Hyperfine-Structure-Induced Depolarization of Impulsively Aligned I-2 Molecules

Esben Folger Thomas, Anders A. Sondergaard, Benjamin Shepperson, Niels Engholm Henriksen, Henrik Stapelfeldt

Department of Chemistry

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

A moderately intense 450 fs laser pulse is used to create rotational wave packets in gas phase I-2 molecules. The ensuing time-dependent alignment, measured by Coulomb explosion imaging with a delayed probe pulse, exhibits the characteristic revival structures expected for rotational wave packets but also a complex nonperiodic substructure and decreasing mean alignment not observed before. A quantum mechanical model attributes the phenomena to coupling between the rotational angular momenta and the nuclear spins through the electric quadrupole interaction. The calculated alignment trace agrees very well with the experimental results.

Original language	English
Article number	163202
Journal	Physical Review Letters
Volume	120
Issue number	16
Number of pages	6
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.120.163202
Publication status	Published - 2018

Bibliographical note

High Energy Physics (HEP) papers published after January 1, 2018 in Physical Review Letters, Physical Review C, and Physical Review D are published open access, paid for centrally by SCOAP3. Library subscriptions will be modified accordingly. This arrangement will initially last for two years, up to the end of 2019.

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title = "Hyperfine-Structure-Induced Depolarization of Impulsively Aligned I-2 Molecules",

abstract = "A moderately intense 450 fs laser pulse is used to create rotational wave packets in gas phase I-2 molecules. The ensuing time-dependent alignment, measured by Coulomb explosion imaging with a delayed probe pulse, exhibits the characteristic revival structures expected for rotational wave packets but also a complex nonperiodic substructure and decreasing mean alignment not observed before. A quantum mechanical model attributes the phenomena to coupling between the rotational angular momenta and the nuclear spins through the electric quadrupole interaction. The calculated alignment trace agrees very well with the experimental results.",

author = "Thomas, {Esben Folger} and Sondergaard, {Anders A.} and Benjamin Shepperson and Henriksen, {Niels Engholm} and Henrik Stapelfeldt",

note = "High Energy Physics (HEP) papers published after January 1, 2018 in Physical Review Letters, Physical Review C, and Physical Review D are published open access, paid for centrally by SCOAP3. Library subscriptions will be modified accordingly. This arrangement will initially last for two years, up to the end of 2019.",

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doi = "10.1103/PhysRevLett.120.163202",

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AU - Thomas, Esben Folger

AU - Sondergaard, Anders A.

AU - Shepperson, Benjamin

AU - Henriksen, Niels Engholm

AU - Stapelfeldt, Henrik

N1 - High Energy Physics (HEP) papers published after January 1, 2018 in Physical Review Letters, Physical Review C, and Physical Review D are published open access, paid for centrally by SCOAP3. Library subscriptions will be modified accordingly. This arrangement will initially last for two years, up to the end of 2019.

PY - 2018

Y1 - 2018

N2 - A moderately intense 450 fs laser pulse is used to create rotational wave packets in gas phase I-2 molecules. The ensuing time-dependent alignment, measured by Coulomb explosion imaging with a delayed probe pulse, exhibits the characteristic revival structures expected for rotational wave packets but also a complex nonperiodic substructure and decreasing mean alignment not observed before. A quantum mechanical model attributes the phenomena to coupling between the rotational angular momenta and the nuclear spins through the electric quadrupole interaction. The calculated alignment trace agrees very well with the experimental results.

AB - A moderately intense 450 fs laser pulse is used to create rotational wave packets in gas phase I-2 molecules. The ensuing time-dependent alignment, measured by Coulomb explosion imaging with a delayed probe pulse, exhibits the characteristic revival structures expected for rotational wave packets but also a complex nonperiodic substructure and decreasing mean alignment not observed before. A quantum mechanical model attributes the phenomena to coupling between the rotational angular momenta and the nuclear spins through the electric quadrupole interaction. The calculated alignment trace agrees very well with the experimental results.

U2 - 10.1103/PhysRevLett.120.163202

DO - 10.1103/PhysRevLett.120.163202

M3 - Journal article

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VL - 120

JO - Physical Review Letters

JF - Physical Review Letters

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