Efficient transfer of inversion doublet populations in deuterated ammonia using adiabatic rapid passage

S. Herbers; Y. M. Caris; S. E.J. Kuijpers; J. U. Grabow; S. Y.T. van de Meerakker

doi:10.1080/00268976.2022.2129105

Efficient transfer of inversion doublet populations in deuterated ammonia using adiabatic rapid passage

S. Herbers, Y. M. Caris, S. E.J. Kuijpers, J. U. Grabow, S. Y.T. van de Meerakker^*

^*Korrespondierende*r Autor*in für diese Arbeit

Institut für Physikalische Chemie und Elektrochemie

Radboud Universität Nijmegen (RU)

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Abstract

We demonstrate the efficient transfer of population from the upper to the lower inversion level within the rotational ground state of para-ND (Formula presented.). A packet of ND (Formula presented.) molecules is velocity controlled and state selected using a Stark decelerator, and subsequently transferred with (Formula presented.) efficiency using the principles of adiabatic rapid passage. Transitions are induced using microwave chirps both under zero-field conditions as well as in the presence of an electric field to probe (Formula presented.) -resolved transition efficiencies. Simulations of the transfer efficiencies based on the von Neumann equation, taking all hyperfine transitions into account, showed excellent agreement with experimental observations.

Originalsprache	Englisch
Aufsatznummer	e2129105
Fachzeitschrift	Molecular physics
Jahrgang	121
Ausgabenummer	17-18
Elektronisch veröffentlicht (E-Pub)	1 Okt. 2022
DOIs	https://doi.org/10.1080/00268976.2022.2129105
Publikationsstatus	Veröffentlicht - 2023

ASJC Scopus Sachgebiete

Biophysik
Molekularbiologie
Physik der kondensierten Materie
Physikalische und Theoretische Chemie

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10.1080/00268976.2022.2129105Lizenz: CC BY 4.0

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title = "Efficient transfer of inversion doublet populations in deuterated ammonia using adiabatic rapid passage",

abstract = "We demonstrate the efficient transfer of population from the upper to the lower inversion level within the rotational ground state of para-ND (Formula presented.). A packet of ND (Formula presented.) molecules is velocity controlled and state selected using a Stark decelerator, and subsequently transferred with (Formula presented.) efficiency using the principles of adiabatic rapid passage. Transitions are induced using microwave chirps both under zero-field conditions as well as in the presence of an electric field to probe (Formula presented.) -resolved transition efficiencies. Simulations of the transfer efficiencies based on the von Neumann equation, taking all hyperfine transitions into account, showed excellent agreement with experimental observations.",

keywords = "Adiabatic rapid passage, ammonia, microwave spectroscopy, Stark decelerator, von Neumann equation",

author = "S. Herbers and Caris, {Y. M.} and Kuijpers, {S. E.J.} and Grabow, {J. U.} and {van de Meerakker}, {S. Y.T.}",

note = "Funding Information: This work is part of the research program of the Netherlands Organization for Scientific Research (NWO). S. Y. T. van de Meerakker acknowledges support from the H2020 European Research Council (ERC) under the European Union's Horizon 2020 Research and Innovation Program [grant agreement number 817947 FICOMOL]. S. H. would like to thank B. Sartakov for the detailed exchange regarding the Stark effect in ammonia and is grateful to H. S. P. M{\"u}ller for providing initial SPFIT/SPCAT files for ND including nitrogen quadrupole coupling. We thank Niek Janssen and Andr{\'e} van Roij for expert technical support.",

year = "2023",

doi = "10.1080/00268976.2022.2129105",

language = "English",

volume = "121",

journal = "Molecular physics",

issn = "0026-8976",

publisher = "Taylor and Francis Ltd.",

number = "17-18",

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TY - JOUR

T1 - Efficient transfer of inversion doublet populations in deuterated ammonia using adiabatic rapid passage

AU - Herbers, S.

AU - Caris, Y. M.

AU - Kuijpers, S. E.J.

AU - Grabow, J. U.

AU - van de Meerakker, S. Y.T.

N1 - Funding Information: This work is part of the research program of the Netherlands Organization for Scientific Research (NWO). S. Y. T. van de Meerakker acknowledges support from the H2020 European Research Council (ERC) under the European Union's Horizon 2020 Research and Innovation Program [grant agreement number 817947 FICOMOL]. S. H. would like to thank B. Sartakov for the detailed exchange regarding the Stark effect in ammonia and is grateful to H. S. P. Müller for providing initial SPFIT/SPCAT files for ND including nitrogen quadrupole coupling. We thank Niek Janssen and André van Roij for expert technical support.

PY - 2023

Y1 - 2023

N2 - We demonstrate the efficient transfer of population from the upper to the lower inversion level within the rotational ground state of para-ND (Formula presented.). A packet of ND (Formula presented.) molecules is velocity controlled and state selected using a Stark decelerator, and subsequently transferred with (Formula presented.) efficiency using the principles of adiabatic rapid passage. Transitions are induced using microwave chirps both under zero-field conditions as well as in the presence of an electric field to probe (Formula presented.) -resolved transition efficiencies. Simulations of the transfer efficiencies based on the von Neumann equation, taking all hyperfine transitions into account, showed excellent agreement with experimental observations.

AB - We demonstrate the efficient transfer of population from the upper to the lower inversion level within the rotational ground state of para-ND (Formula presented.). A packet of ND (Formula presented.) molecules is velocity controlled and state selected using a Stark decelerator, and subsequently transferred with (Formula presented.) efficiency using the principles of adiabatic rapid passage. Transitions are induced using microwave chirps both under zero-field conditions as well as in the presence of an electric field to probe (Formula presented.) -resolved transition efficiencies. Simulations of the transfer efficiencies based on the von Neumann equation, taking all hyperfine transitions into account, showed excellent agreement with experimental observations.

KW - Adiabatic rapid passage

KW - ammonia

KW - microwave spectroscopy

KW - Stark decelerator

KW - von Neumann equation

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