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Spectral shape of the (7/2−→5/2+)-transition in the β-decay of139Ba (1975)

Flothmann, D. ; Gils, H. J. ; Wiesner, W. ; [et al.]

Springer

The European physical journal 272 (1975), S. 219-222

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ISSN: 1434-601X

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The energy spectrum of theβ-decay leading from the ground state of139Ba to the first excited state of139La has been measured in coincidence with the 166keV-γ-transition. For the measurement a well tested 4π-β-γ-coincidence spectrometer has been used. Because of its highβ- andγ-efficiency the instrument is especially suitable for selecting the spectrum of a weak and short livingβ-component. The measured spectrum has been corrected for distortions due to bremsstrahlung escaping from the Si(Li)-detectors. The shape factor has been determined and compared with former measurements. The significance of matrix elements extracted from the spectral shape is discussed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01408151

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