THE MAGNETIC MOMENT OF THE 181-kev LEVEL OF TECHNETIUM-99 (in German)
The nuclear g-factor of the 181-kev level of Tc/sup 99/ was determined by measuring the angular correlation of the 741-181 kev gamma-gamma cascade in an external magnetic field. The result, g = plus or minus 1.44 plus or minus 0.13, yields a magnetic moment of 3.6 plus or minus 0.3 nuclear magnetons for the spin assignment 5/2. A study of the disintegration confirmed the known decay scheme, but an additional gamma ray of 950 kev was found. Coincidence measurements proved that this gamma ray is a transition to the 181-kev level. A new determination of the half life time of the 181-kev level confirmed the known value, but the limits of error were reduced to: T/sub 1/2/ = 3.57 plus or minus 0.05 x 10/sup -9/s. The angular correlation function of the 741-kev181- kev cascade was measured as W( THETA ) = 1 + (0.118 plus or minus 0.0111 x P/sub 2/ (cos THETA ) -(0.003 plus or minus 0.0081 x P/sub 4/ (cos THETA ) and the 741-kev-41-kev-140-kev triple cascade as W( THETA ) = P/sub 4/ (cos THETA ). The source was prepared as ammonium molybdate in liquid solution. Delayed coincidence measurements showed weak perturbations by internal fields. The results are discussed. (auth) nuclear polarization, the sign of which is independent of j and which may assume the value one. (auth)
- Research Organization:
- Physikalischen Staatsinstitut, HAmburg
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-008174
- OSTI ID:
- 4275130
- Journal Information:
- Z. Physik, Journal Name: Z. Physik Vol. Vol: 153
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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