Measurement of the photoionization cross section of the 5S{sub 1/2} state of rubidium
Journal Article
·
· Physical Review. A
- Laser and Optics Research Center, Department of Physics, United States Air Force Academy, Colorado Springs, Colorado 80840 (United States)
We report the measurement of the photoionization cross section for the 5S{sub 1/2} state of rubidium, using atoms confined in a magneto-optical trap. A single-photon rate at {lambda}=266 nm was found by monitoring the decay of trap fluorescence after exposure to ionizing radiation from a quadrupled Nd:YVO{sub 4} laser. In order to eliminate excited-state ionization, the photoionization and trapping lasers were alternately chopped, so that only ground-state atoms were ionized. We determine that the photoionization cross section at {lambda}=266 nm is {sigma}=1.7(2)x10{sup -20} cm{sup 2}.
- OSTI ID:
- 20632441
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 66; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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