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Test of mp/me changes using vibrational transitions in N2+

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posted on 2023-06-09, 12:09 authored by Masatoshi Kajita, Geetha Gopakumar, Minori Abe, Masahiko Hada, Matthias KellerMatthias Keller
In this paper we propose to utilize the X2Sg(?,N,F,M)=(0,0,1/2,±1/2)?(1,0,1/2,±1/2) or (2,0,1/2,±1/2) transition of N2+ (I=0) to test variations of the proton-to-electron mass ratio. The X2Sg ground state exhibits no quadrupole shift and the Zeeman shift of the N=0?N=0 transition is exactly zero. Because N2+ is nonpolar, systematic level shifts such as Stark shifts induced by trap electric field or blackbody radiation are very small and the thermalization of the rotational states is inhibited. This eases the requirements on the experimental setup significantly. Employing Raman transitions at the “magic” wavelength the (0,0,1/2,±1/2)?(1,0,1/2,±1/2) or (2,0,1/2,±1/2) transition frequency can be measured very precisely.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review A

ISSN

1050-2947

Publisher

American Physical Society

Issue

3

Volume

89

Page range

1-6

Article number

a032509

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-02-14

First Open Access (FOA) Date

2018-02-14

First Compliant Deposit (FCD) Date

2018-02-14

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