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

被引：9

作者：

Bernhardt, D. ^{[1
]}

Brandau, C. ^{[1
,2
]}

Kozhuharov, C. ^{[2
]}

Mueller, A. ^{[1
]}

Schippers, S. ^{[1
]}

Boehm, S. ^{[1
]}

Bosch, F. ^{[2
]}

Jacobi, J. ^{[1
]}

Kieslich, S. ^{[1
]}

Knopp, H. ^{[1
]}

Mokler, P. H. ^{[1
,3
]}

Nolden, F. ^{[2
]}

Shi, W. ^{[1
]}

Stachura, Z. ^{[4
]}

Steck, M. ^{[2
]}

Stoehlker, T. ^{[2
,5
]}

机构：

[1] Univ Giessen, Inst Atom & Mol Phys, D-35392 Giessen, Germany

[2] GSI Helmholtzzentrum Schwerionenforschung, D-64291 Darmstadt, Germany

[3] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[4] Instytut Fizyki Jgdrowej, PL-31342 Krakow, Poland

[5] Heidelberg Univ, Phys Inst, D-69120 Heidelberg, Germany

来源：

XXVII INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC 2011), PTS 1-15 | 2012年 / 388卷

关键词：

DECAY; RECOMBINATION; STATES; LEVEL;

D O I：

10.1088/1742-6596/388/1/012007

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Dielectronic recombination (DR) of Be-like Xe-136(50+) 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 Xe-136(50+) (2s2p P-3(0)) 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.

引用

页数：5

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