Extraction of spin-averaged rovibrational transition frequencies in HD+ for the determination of fundamental constants

被引:9
作者
Karr, J. -Ph. [1 ,2 ]
Koelemeij, Jeroen C. J. [3 ,4 ]
机构
[1] ENS Univ PSL, Sorbonne Univ, Coll France, Lab Kastler Brossel,NRS, Paris, France
[2] Univ Paris Saclay, Univ Evry Val Essonne, Evry, France
[3] Vrije Univ Amsterdam, Dept Phys & Astron, LaserLaB, Amsterdam, Netherlands
[4] Vrije Univ Amsterdam, Dept Phys & Astron, LaserLaB, Boelelaan 1081, NL-1081 HV Amsterdam, Netherlands
关键词
Deuterated hydrogen molecular ion; precision rotational-vibrational spectroscopy; ab initio molecular theory; molecular hyperfine structure; fundamental physical constants; CODATA RECOMMENDED VALUES; PHYSICAL CONSTANTS; RADIATIVE-CORRECTIONS; ANTIPROTONIC HELIUM; MASS; SPECTROSCOPY; ELECTRON;
D O I
10.1080/00268976.2023.2216081
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We present a comprehensive analysis of all currently available high-accuracy frequency measurements of rotational and rovibrational transitions in the hydrogen molecular ion HD+. Our analysis utilises the theoretically calculated hyperfine structure to extract the values of three spin-averaged transition frequencies through a global linear least-squares adjustment that takes into account theory-induced correlations between the different transitions. We subsequently use the three spin averaged transition frequencies as input data in a second adjustment which employs precise theoretical expressions for the transition frequencies, written as a function of the proton, deuteron and electron relative atomic masses, the Rydberg constant, and the proton and deuteron charge radii. Our analysis shows that the HD+ data may significantly improve the value of the electron relative atomic mass and the proton-electron mass ratio, in particular if combined with recent high-precision measurements of particle atomic masses and mass ratios obtained from Penning traps.
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页数:13
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