Measurement of the Unperturbed Hydrogen Hyperfine Transition Frequency

Autor:	M. W. Levine, D.J. Glaze, David W. Allan, Helmut Hellwig, Paul W. Zitzewitz, Robert F. C. Vessot
Rok vydání:	1970
Předmět:	Physics Hydrogen chemistry.chemical_element Frequency shift Size measurement law.invention Nuclear magnetic resonance chemistry Atomic electron transition law Caesium Electrical and Electronic Engineering Atomic physics Maser Instrumentation Hyperfine structure
Zdroj:	IEEE Transactions on Instrumentation and Measurement. 19:200-209
ISSN:	1557-9662 0018-9456
DOI:	10.1109/tim.1970.4313902
Popis:	The results of a joint experiment aimed primarily at the determination of the frequency of the H1 hyperfine transition (F = 1, mF = 0) ? (F = 0, mF = 0) is reported. In terms of the frequency of the Cs133 hyperfine transition (F = 4, mF = 0) ?(F = 3, mF = 0), defined as 9192 631 770 Hz, for the unperturbed hydrogen transition frequency the value ?H = 1420 405 751.768 Hz is obtained. This result is the mean of two independent evaluations against the same cesium reference, which differ by 2 × 10-3 Hz. We estimate the one-sigma uncertainty of the value ?H also to be 2 × 10-3 Hz. One evaluation is based on wall-shift experiments at Harvard University; the other is a result of a new wall-shift measurement using many storage bulbs of different sizes at the National Bureau of Standards. The experimental procedures and the applied corrections are described. Results for the wall shift and for the frequency of hydrogen are compared with previously published values, and error limits of the experiments are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d83e915e0ecde63f70134f0710ee7f77 https://doi.org/10.1109/tim.1970.4313902 Zobrazit plný text záznamu