Details
| Original language | English |
|---|---|
| Pages (from-to) | 1397-1400 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 70 |
| Issue number | 10 |
| Publication status | Published - 8 Mar 1993 |
| Externally published | Yes |
Abstract
Using continuous-wave excitation to eliminate the problems inherent with pulsed laser measurements of nonlinear transitions, we have measured the 13S1-23S1 interval in positronium (Ps) to be 1 233 607 216.43.2 MHz. The quoted 2.6 ppb (parts per 109) uncertainty is primarily due to the determination of the Ps resonance relative to the Te2 reference line, with a 1.5 ppb contribution from a recent calibration of the Te2 line relative to the hydrogen 1S-2S transition. The uncertainty corresponds to 3.5×10-5 of the 2R QED contribution to the 13S1-23S1 interval. Our measurement is sufficiently accurate to provide a test of the as yet uncalculated 4R QED corrections.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 70, No. 10, 08.03.1993, p. 1397-1400.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Measurement of the Positronium 13 S1-23 S1 Interval by Continuous-Wave Two-Photon Excitation
AU - Fee, M. S.
AU - Mills, A. P.
AU - Chu, S.
AU - Shaw, E. D.
AU - Danzmann, K.
AU - Chichester, R. J.
AU - Zuckerman, D. M.
PY - 1993/3/8
Y1 - 1993/3/8
N2 - Using continuous-wave excitation to eliminate the problems inherent with pulsed laser measurements of nonlinear transitions, we have measured the 13S1-23S1 interval in positronium (Ps) to be 1 233 607 216.43.2 MHz. The quoted 2.6 ppb (parts per 109) uncertainty is primarily due to the determination of the Ps resonance relative to the Te2 reference line, with a 1.5 ppb contribution from a recent calibration of the Te2 line relative to the hydrogen 1S-2S transition. The uncertainty corresponds to 3.5×10-5 of the 2R QED contribution to the 13S1-23S1 interval. Our measurement is sufficiently accurate to provide a test of the as yet uncalculated 4R QED corrections.
AB - Using continuous-wave excitation to eliminate the problems inherent with pulsed laser measurements of nonlinear transitions, we have measured the 13S1-23S1 interval in positronium (Ps) to be 1 233 607 216.43.2 MHz. The quoted 2.6 ppb (parts per 109) uncertainty is primarily due to the determination of the Ps resonance relative to the Te2 reference line, with a 1.5 ppb contribution from a recent calibration of the Te2 line relative to the hydrogen 1S-2S transition. The uncertainty corresponds to 3.5×10-5 of the 2R QED contribution to the 13S1-23S1 interval. Our measurement is sufficiently accurate to provide a test of the as yet uncalculated 4R QED corrections.
UR - http://www.scopus.com/inward/record.url?scp=4243669420&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.70.1397
DO - 10.1103/PhysRevLett.70.1397
M3 - Article
AN - SCOPUS:4243669420
VL - 70
SP - 1397
EP - 1400
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 10
ER -