Analysis of 1s(2s2p {sup 3}P)nl Rydberg states in the K-shell photoionization of the Be atom

Journal Article · Thu Jun 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.0· OSTI ID:20787501

Yoshida, Fumiko; Matsuoka, Leo; Takashima, Ryuta; Hasegawa, Shuichi ^[1]; Nagata, Tetsuo ^[2]; Azuma, Yoshiro; Obara, Satoshi ^[3]; Koike, Fumihiro ^[4]

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1. Department of Quantum Engineering and Systems Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)
2. Meisei University, Hodokubo, Hino, Tokyo 191-8506 (Japan)
3. Photon Factory, IMSS, KEK, Tsukuba, Ibaraki 305-0801 (Japan)
4. Kitasato University, Sagamihara, Kanagawa 228-8555 (Japan)

We have observed inner-shell photoionization of Be using synchrotron radiation in the energy region of the 1s(2s2p {sup 3}P)nl Rydberg states. We used a time-of-flight method to distinguish singly and doubly charged photoions and obtained the Be{sup +} [ns; n=5-12 ({sup 1}P)3s] and Be{sup 2+} [ns; n=5-8, nd=5,6 ({sup 1}P)3s] ion spectra with high resolution corresponding to an instrumental bandpass of 13 meV. Detailed analysis enabled the autoionization parameters, resonance energy position E{sub 0}, resonance width {gamma}, and Fano parameter q, to be obtained. From the resonance positions of the {sup 3}Pnl series members, the series limit was determined to be 127.97 eV, which is in good agreement with previous experiments.

• OSTI ID: 20787501
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
AUTOIONIZATION
BERYLLIUM
BERYLLIUM IONS
EV RANGE
INNER-SHELL IONIZATION
K SHELL
LEVEL WIDTHS
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
RESONANCE
RYDBERG STATES
SYNCHROTRON RADIATION
TIME-OF-FLIGHT METHOD