Low-spin states of /sup 250/Cf populated in the electron capture decay of 2. 22-h /sup 250/Es. [ULTIPOLE TRANSITIONS; PARITY; ROTATIONAL STATES; SPIN; VIBRATIONAL STATES; GAMMA SPECTRA]
Low-spin states of /sup 250/Cf have been investigated by measuring ..gamma.. rays and conversion electrons associated with the electron capture decay of 2.22-h /sup 250/Es. Mass-separated /sup 250/Es samples produced by the /sup 249/Cf(d,n) reaction were used for these measurements. The ..gamma..-ray spectra were measured with a 25-cm/sup 3/ coaxial Ge(Li) spectrometer and the electron spectra were measured with a cooled Si(Li) detector. Multipolarities of intense transitions in /sup 250/Cf were deduced and logft values of electron capture transitions were derived from measured electron capture intensities. On the basis of the results of the present investigation the following bandheads were identified in /sup 250/Cf: E (keV),K,I..pi..=871.6, 2,2-; 1031.9, 2,2+; 1154.2, 0,0+; 1175.5, 1,1-; 1210.0, 2,2-; 1244.4, 2,2+; 1266.5, 0,0+; and 1658.1, 2,2+. The 2.22-h state in /sup 250/Es has been given a spin-parity assignment of 1- with configuration )n(734)9/2-; p(633)7/2+)/sub 1//sub -/.
- Research Organization:
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5054782
- Journal Information:
- Phys. Rev., C; (United States), Vol. 22:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CALIFORNIUM 250
ENERGY LEVELS
EINSTEINIUM 250
ELECTRON CAPTURE DECAY
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BETA DECAY
BETA DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
DECAY
EINSTEINIUM ISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITED STATES
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
ISOTOPES
NUCLEI
ODD-ODD NUCLEI
PARTICLE PROPERTIES
RADIOISOTOPES
SPECTRA
YEARS LIVING RADIOISOTOPES
652023* - Nuclear Properties & Reactions
A=220 & above
Experimental- Energy Levels & Transitions- (-1987)
652025 - Nuclear Properties & Reactions
A=220 & above
Experimental- Nuclear Reactions & Scattering- (-1987)