Delayed neutron precursors at masses 97--99 and 146--148

Journal Article · Sat Oct 01 04:00:00 EDT 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.28.1740· OSTI ID:5539176

Reeder, P L; Warner, R A

Delayed neutron emission probabilities, P/sub n/, have been measured for /sup 98,99/Sr, /sup 97/Y/sup g/,m, /sup 98/Y/sup g/, /sup 99/Y, /sup 147/Ba, and /sup 147,148/La. This is the first reported measurement for /sup 97/Y/sup m/. Upper limits to the P/sub n/ for /sup 97/Sr, /sup 146,148/Ba, and /sup 146/La were established. The P/sub n/ values measured here are much smaller than a set of published measurements. Calculations of total delayed neutron yields from fission are consistent with experimental measurements of total delayed neutron yields except for fast neutron fission of /sup 238/U. Improved half-lives are reported for 13 of the Rb, Sr, Y, Cs, Ba, and La nuclides at masses 97--99 and 146--148.

• Research Organization: Pacific Northwest Laboratory, Richland, Washington 99352
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5539176
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 28:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651725* -- Nuclear Properties & Reactions
A=90-149
Experimental-- Nuclear Reactions & Scattering-- (-1987)
652026 -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
BARIUM 147
BARIUM 148
BARIUM ISOTOPES
BARYON REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM 146
CESIUM 147
CESIUM ISOTOPES
CROSS SECTIONS
DATA
DELAYED NEUTRON PRECURSORS
DELAYED NEUTRONS
ELEMENTARY PARTICLES
EMISSION
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
FISSION
FISSION NEUTRONS
HADRON REACTIONS
HADRONS
HALF-LIFE
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LANTHANUM 147
LANTHANUM 148
LANTHANUM ISOTOPES
MILLISEC LIVING RADIOISOTOPES
NEUTRON EMISSION
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PROBABILITY
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RUBIDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
STRONTIUM ISOTOPES
TARGETS
TOTAL CROSS SECTIONS
URANIUM 235 TARGET
YTTRIUM ISOTOPES