Deuteron-to-Proton Mass Ratio from Simultaneous Measurement of the Cyclotron Frequencies of H2+ and D+

被引：17

作者：

Fink, David J. ^{[1
]}

Myers, Edmund G. ^{[1
]}

机构：

[1] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 24期

基金：

美国国家科学基金会;

关键词：

PENNING TRAP; 2; IONS; ANTIPROTON; ELECTRON; PHYSICS;

D O I：

10.1103/PhysRevLett.127.243001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By simultaneously measuring the cyclotron frequencies of an H-2(+) ion and a deuteron in a coupled magnetron orbit we have made an extended series of measurements of their cyclotron frequency ratio. From the observed changes in H-2(+) mass energy we have followed the decay of three ions to the vibrational ground state. We are able to assign some of our measured ratios to specific rovibrational levels, hence reducing uncertainty due to H-2(+) rotational energy. Assuming the most probable assignment, we obtain a deuteron-to-proton mass ratio, m(d)/m(p) = 1.999 007 501 272(9). Combined with the atomic mass of the deuteron [S. Rau et al., Nature (London) 585, 43 (2020).] we also obtain a new value for the atomic mass of the proton, m(p) = 1.007 276 466 574(10) u.

引用

页数：6

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