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  • 1980-1984  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 318 (1984), S. 7-11 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The 2S 1/2-2P 1/2 Lamb-shift in hydrogenlike Sulfur was measured with a field quench technique. A high velocity beam of S15+-ions (v/c=0.086) prepared in the metastable 2S 1/2 state crosses a homogeneous magnetic field of about 1.8 Tesla. The strong electric field of 4·107 V/m in the rest frame of the ions mixes the longlived 2S 1/2-state (τ=7.18 nsec) with the short lived 2P 1/2-state (τ=2.4·10−5 ns). From the measured lifetime of the thus quenched 2S 1/2-state a Lamb-shift value of 25.14±0.24 THz is derived and compared with theoretical predictions.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 302 (1981), S. 51-59 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract γ-ray spectroscopic techniques have been applied to measure properties of excited states (E *〈2MeV) in210Pb,212Po, and213At after populating these neutron rich (N=128) nuclei via18O induced few-nucleon transfer reactions on208Pb and209Bi targets. In212Po an isomeric state is located atE *=1,477 keV with a halflife oft 1/2=14.7±0.3 ns. This state is interpreted to be the 8+ yrast level which decays to the ground state via the measured $$8^ + \left( {121.1 keV} \right)6^ + \left( {223.3 keV} \right)4^ + \left( {405.1 keV} \right)2^ + \left( {727.8 keV} \right)0^ + $$ γ-cascade.α-decay (E α≈10.2 MeV) of the isomer is also observed. In210Pb the time spectra for members of the 4+ (297.8keV) 2+ (799.4keV)0+ γ-cascade show a delayed component with a halflife oft 1/2=152±13 ns which is attributed to the known 8+ yrast state atE *=1.27 MeV. For213At first results on theγ-decay of excited states are presented.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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