Precision spectroscopy of the 2S-4P transition in atomic hydrogen on a cryogenic beam of optically excited 2S atoms

Axel Beyer; Janis Alnis; Ksenia Khabarova; Arthur Matveev; Christian G. Parthey; Dylan C. Yost; Randolf Pohl; Thomas Udem; Theodor W. Hänsch; Nikolai Kolachevsky

doi:10.1002/andp.201300075

Precision spectroscopy of the 2S-4P transition in atomic hydrogen on a cryogenic beam of optically excited 2S atoms

Axel Beyer^*
, Janis Alnis
, Ksenia Khabarova
, Arthur Matveev
, Christian G. Parthey
, Dylan C. Yost
, Randolf Pohl
, Thomas Udem
, Theodor W. Hänsch
, Nikolai Kolachevsky

^*Corresponding author for this work

Max Planck Institute of Quantum Optics
National Research Institute of Physical, Technical and Radiotechnical Measurements
Ludwig Maximilian University of Munich
Lebedev Physical Institute

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

Precision spectroscopy of the 2S - 4P1/2 and 2S - 4P3/2 transitions in atomic hydrogen is performed with a reproducibility of a few parts in 1012. A cryogenic beam of metastable 2S atoms is obtained by optical excitation, avoiding excessive heating of electron impact excitation used in all previous experiments of this kind. Despite the low temperature of 5.8 K, the first-order Doppler effect is the dominating systematic shift, which is suppressed to a very high degree. The effectiveness of this suppression is verified by employing a time-resolved detection scheme. This experiment should contribute to an improved determination of the Rydberg constant and the proton r.m.s. charge radius.

Original language	English
Pages (from-to)	671-679
Number of pages	9
Journal	Annalen der Physik
Volume	525
Issue number	8/9
DOIs	https://doi.org/10.1002/andp.201300075
Publication status	Published - Sept 2013
Externally published	Yes

OECD Field of Science

1.3 Physical Sciences

Keywords

Atomic hydrogen
Precision spectroscopy
Proton r.m.s charge radius
Proton size puzzle
Rydberg constant

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10.1002/andp.201300075

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title = "Precision spectroscopy of the 2S-4P transition in atomic hydrogen on a cryogenic beam of optically excited 2S atoms",

abstract = "Precision spectroscopy of the 2S - 4P1/2 and 2S - 4P3/2 transitions in atomic hydrogen is performed with a reproducibility of a few parts in 1012. A cryogenic beam of metastable 2S atoms is obtained by optical excitation, avoiding excessive heating of electron impact excitation used in all previous experiments of this kind. Despite the low temperature of 5.8 K, the first-order Doppler effect is the dominating systematic shift, which is suppressed to a very high degree. The effectiveness of this suppression is verified by employing a time-resolved detection scheme. This experiment should contribute to an improved determination of the Rydberg constant and the proton r.m.s. charge radius.",

keywords = "Atomic hydrogen, Precision spectroscopy, Proton r.m.s charge radius, Proton size puzzle, Rydberg constant",

author = "Axel Beyer and Janis Alnis and Ksenia Khabarova and Arthur Matveev and Parthey, \{Christian G.\} and Yost, \{Dylan C.\} and Randolf Pohl and Thomas Udem and H{\"a}nsch, \{Theodor W.\} and Nikolai Kolachevsky",

year = "2013",

month = sep,

doi = "10.1002/andp.201300075",

language = "English",

volume = "525",

pages = "671--679",

journal = "Annalen der Physik",

issn = "0003-3804",

publisher = "Wiley-Blackwell",

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}

TY - JOUR

T1 - Precision spectroscopy of the 2S-4P transition in atomic hydrogen on a cryogenic beam of optically excited 2S atoms

AU - Beyer, Axel

AU - Alnis, Janis

AU - Khabarova, Ksenia

AU - Matveev, Arthur

AU - Parthey, Christian G.

AU - Yost, Dylan C.

AU - Pohl, Randolf

AU - Udem, Thomas

AU - Hänsch, Theodor W.

AU - Kolachevsky, Nikolai

PY - 2013/9

Y1 - 2013/9

N2 - Precision spectroscopy of the 2S - 4P1/2 and 2S - 4P3/2 transitions in atomic hydrogen is performed with a reproducibility of a few parts in 1012. A cryogenic beam of metastable 2S atoms is obtained by optical excitation, avoiding excessive heating of electron impact excitation used in all previous experiments of this kind. Despite the low temperature of 5.8 K, the first-order Doppler effect is the dominating systematic shift, which is suppressed to a very high degree. The effectiveness of this suppression is verified by employing a time-resolved detection scheme. This experiment should contribute to an improved determination of the Rydberg constant and the proton r.m.s. charge radius.

AB - Precision spectroscopy of the 2S - 4P1/2 and 2S - 4P3/2 transitions in atomic hydrogen is performed with a reproducibility of a few parts in 1012. A cryogenic beam of metastable 2S atoms is obtained by optical excitation, avoiding excessive heating of electron impact excitation used in all previous experiments of this kind. Despite the low temperature of 5.8 K, the first-order Doppler effect is the dominating systematic shift, which is suppressed to a very high degree. The effectiveness of this suppression is verified by employing a time-resolved detection scheme. This experiment should contribute to an improved determination of the Rydberg constant and the proton r.m.s. charge radius.

KW - Atomic hydrogen

KW - Precision spectroscopy

KW - Proton r.m.s charge radius

KW - Proton size puzzle

KW - Rydberg constant

UR - https://www.scopus.com/pages/publications/84884474477

U2 - 10.1002/andp.201300075

DO - 10.1002/andp.201300075

M3 - Article

AN - SCOPUS:84884474477

SN - 0003-3804

VL - 525

SP - 671

EP - 679

JO - Annalen der Physik

JF - Annalen der Physik

IS - 8/9

ER -

Precision spectroscopy of the 2S-4P transition in atomic hydrogen on a cryogenic beam of optically excited 2S atoms

Abstract

OECD Field of Science

Keywords

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