Bestimmung desg _R -Faktors des 2+-Rotationsniveaus von W¹⁸² durch differentielle γγ-Winkelkorrelationsmessungen in einem äußeren Magnetfeld

Abstract

The time spectrum of the coincidences between theγ-group at 1150 keV and the 100 keV radiation in the decay of Ta¹⁸² was observed in an external magnetic field of 29300±300 Gauss at eight different angles. The analysis of these data which took into account the experimentally determined shape of the prompt resolution curve yields for theg-factor of the 2+ rotational state:

$$g_R = + 0 \cdot 336 \pm 0 \cdot 044.$$

The angular correlation was found to be slightly attenuated by internal fields. The integral attenuation factor was determined as:

$$G_4 = \frac{\lambda }{{\lambda + \lambda _4 }} = 0 \cdot 91 \pm 0 \cdot 05.$$

Liquid sources of tantalum fluoride solved in concentric hydrofluoric acid were used for these experiments. The half life of the 100 keV state was determined as:

$$T_{1/2} = (1 \cdot 41 \pm 0 \cdot 06) \cdot 10^{ - 9} s$$

in agreement with earlier measurements.