English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Penning trap mass measurements of the deuteron and the HD+ molecular ion

Rau, S., Heiße, F., Köhler-Langes, F., Sasidharan, S., Haas, R., Renisch, D., et al. (2020). Penning trap mass measurements of the deuteron and the HD+ molecular ion. Nature, 585, 43-47. doi:10.1038/s41586-020-2628-7.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0006-F2A1-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-F2A2-1
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Rau, Sascha1, Author              
Heiße, Fabian1, Author              
Köhler-Langes, Florian1, Author              
Sasidharan, Sangeetha, Author
Haas , Raphael, Author
Renisch, Dennis1, Author              
Düllmann , Christoph E., Author
Quint, Wolfgang, Author
Sturm, Sven1, Author              
Blaum, Klaus1, Author              
Affiliations:
1Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              

Content

show
hide
Free keywords: -
 MPINP: Präzisionsexperimente - Abteilung Blaum
 Abstract: The masses of the lightest atomic nuclei and the electron mass1 are interlinked, and their values affect observables in atomic, molecular and neutrino physics, as well as metrology. The most precise values for these fundamental parameters come from Penning trap mass spectrometry, which achieves relative mass uncertainties of the order of 10−11. However, redundancy checks using data from different experiments reveal considerable inconsistencies in the masses of the proton, the deuteron and the helion (the nucleus of helium-3), suggesting that the uncertainty of these values may have been underestimated. Here we present results from absolute mass measurements of the deuteron and the HD+ molecular ion using 12C as a mass reference. Our value for the deuteron mass, 2.013553212535(17) atomic mass units, has better precision than the CODATA value by a factor of 2.4 and differs from it by 4.8 standard deviations. With a relative uncertainty of eight parts per trillion, this is the most precise mass value measured directly in atomic mass units. Furthermore, our measurement of the mass of the HD+ molecular ion, 3.021378241561(61) atomic mass units, not only allows a rigorous consistency check of our results for the masses of the deuteron (this work) and the proton, but also establishes an additional link for the masses of tritium9 and helium-3 (ref. 10) to the atomic mass unit. Combined with a recent measurement of the deuteron-to-proton mass ratio, the uncertainty of the reference value of the proton mass can be reduced by a factor of three.

Details

show
hide
Language(s):
 Dates: 2020-09-02
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s41586-020-2628-7
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Nature
  Abbreviation : Nature
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 585 Sequence Number: - Start / End Page: 43 - 47 Identifier: ISSN: 0028-0836
CoNE: https://pure.mpg.de/cone/journals/resource/954925427238