Open Access
Proton-electron mass ratio from laser spectroscopy of HD + at the part-per-trillion level
S. Patra
1
,
M Germann
1
,
J. L. Karr
2, 3
,
M Haidar
2
,
L. Hilico
2, 3
,
V. B. Korobov
4
,
F. M. J. Cozijn
1
,
K. S. E. Eikema
1, 5
,
W. Ubachs
1, 5
,
J.C.J Koelemeij
1
2
3
5
ARCNL (Advanced Research Centre for Nanolithography), 1098 XG Amsterdam, Netherlands.
|
Publication type: Journal Article
Publication date: 2020-09-04
scimago Q1
wos Q1
SJR: 10.416
CiteScore: 48.4
Impact factor: 45.8
ISSN: 00368075, 10959203
PubMed ID:
32732278
Multidisciplinary
Abstract
A very precise ratio
The value of the ratio of the masses of the proton and the electron has a bearing on the values of other physical constants. This ratio is known to a very high precision. Patra et al. improved this precision even further by measuring particular frequencies in the rovibrational spectrum of the hydrogen deuteride molecular ion (HD + ) (see the Perspective by Hori). To reach this high precision, the researchers placed the HD + molecules in an ion trap and surrounded them by beryllium ions. The cold beryllium ions then helped cool the HD + molecules, making the HD + spectral lines narrow enough that the proton-electron mass ratio could be extracted by comparison with theoretical predictions.
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130
Total citations:
130
Citations from 2024:
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(29.23%)
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GOST
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Patra S. et al. Proton-electron mass ratio from laser spectroscopy of HD + at the part-per-trillion level // Science. 2020. Vol. 369. No. 6508. pp. 1238-1241.
GOST all authors (up to 50)
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Patra S., Germann M., Karr J. L., Haidar M., Hilico L., Korobov V. B., Cozijn F. M. J., Eikema K. S. E., Ubachs W., Koelemeij J. Proton-electron mass ratio from laser spectroscopy of HD + at the part-per-trillion level // Science. 2020. Vol. 369. No. 6508. pp. 1238-1241.
Cite this
RIS
Copy
TY - JOUR
DO - 10.1126/science.aba0453
UR - https://doi.org/10.1126/science.aba0453
TI - Proton-electron mass ratio from laser spectroscopy of HD + at the part-per-trillion level
T2 - Science
AU - Patra, S.
AU - Germann, M
AU - Karr, J. L.
AU - Haidar, M
AU - Hilico, L.
AU - Korobov, V. B.
AU - Cozijn, F. M. J.
AU - Eikema, K. S. E.
AU - Ubachs, W.
AU - Koelemeij, J.C.J
PY - 2020
DA - 2020/09/04
PB - American Association for the Advancement of Science (AAAS)
SP - 1238-1241
IS - 6508
VL - 369
PMID - 32732278
SN - 0036-8075
SN - 1095-9203
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2020_Patra,
author = {S. Patra and M Germann and J. L. Karr and M Haidar and L. Hilico and V. B. Korobov and F. M. J. Cozijn and K. S. E. Eikema and W. Ubachs and J.C.J Koelemeij},
title = {Proton-electron mass ratio from laser spectroscopy of HD + at the part-per-trillion level},
journal = {Science},
year = {2020},
volume = {369},
publisher = {American Association for the Advancement of Science (AAAS)},
month = {sep},
url = {https://doi.org/10.1126/science.aba0453},
number = {6508},
pages = {1238--1241},
doi = {10.1126/science.aba0453}
}
Cite this
MLA
Copy
Patra, S., et al. “Proton-electron mass ratio from laser spectroscopy of HD + at the part-per-trillion level.” Science, vol. 369, no. 6508, Sep. 2020, pp. 1238-1241. https://doi.org/10.1126/science.aba0453.