Electron Capture and Ionization of Pb Ions at 33 TeV

Journal Article · Sun Feb 01 04:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.1190· OSTI ID:574004

Krause, H F; Vane, C R; Datz, S ^[1]; Grafstroem, P ^[2]; Knudsen, H ^[3]; Scheidenberger, C ^[4]; Schuch, R H ^[5]

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1. Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6377 (United States)
2. CERN SPS/SL Division, CH-1211, Geneva 23 (Switzerland)
3. Institute of Physics, Aarhus University, DK-8000, Aarhus C (Denmark)
4. Gesellschaft fuer Schwerionenforschung mbh, Planckstrasse 1, D-64291, Darmstadt (Germany)
5. Atomic Physics Department, Stockholm University, Frescativaegen 24, S-104 05, Stockholm 50 (Sweden)

We have measured the total cross sections for electron capture by bare Pb{sup 82+} ions and ionization of hydrogenlike Pb{sup 81+} ions at 33TeV (160 GeV/A , {gamma}=168 ) in solid targets of Be, C, Al, Cu, Sn, and Au. The total capture cross sections are dominated by electron capture from pair production and are compared with theoretical calculations. The 1s ionization cross sections obtained are significantly smaller than those predicted by Anholt and Becker [Phys.Rev.A {bold 36}, 4628 (1987)]. The Pb radiative lifetimes extended by {gamma}=168 have a strong effect on the survival probability of excited states against ionization in high-Z solid targets. {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 574004
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTROMAGNETIC FIELDS
ELECTRON CAPTURE
EXCITED STATES
IONIZATION
LEAD IONS
LIFETIME
PAIR PRODUCTION
QUANTUM ELECTRODYNAMICS
TOTAL CROSS SECTIONS