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Conference Paper

Towards a measurement of the 2s2p 3P0 → 2s2 1S0 E1M1 two photon transition rate in Be-like xenon ions

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Mokler,  P. H.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Citation

Bernhardt, D., Brandau, C., Kozhuharov, C., Müller, A., Schippers, S., Böhm, S., et al. (2012). Towards a measurement of the 2s2p 3P0 → 2s2 1S0 E1M1 two photon transition rate in Be-like xenon ions. Journal of Physics: Conference Series, 388(1): 012007.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-6FFD-3
Abstract
Dielectronic recombination (DR) of Be-like 136Xe50+ was measured by employing the electron-ion merged-beam technique at the storage ring ESR of GSI in Darmstadt, Germany. We present results covering the center-of-mass energy range 0 − 4 eV. In addition to Rydberg series of resonances associated with ground-state intra L-shell excitations, resonances were found which are formed during DR of initially metastable 136Xe50+(2s2p 3P0) parent ions. This state is the first excited state and is long lived because the J=0 → J=0 transition and the absence of nuclear spin make the rare E1M1 two-photon transition the lowest-order decay channel. Future measurements which will monitor the strength of the resonances as function of storage time may be exploited for a measurement of the E1M1 two photon transition rate.