Delayed-neutron emission probabilities of separated isotopes of Br, Rb, I, and Cs

Journal Article · Wed Jun 01 04:00:00 EDT 1977 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.15.2108· OSTI ID:7106378

Reeder, P L; Wright, J F; Alquist, L J

Delayed-neutron emission probabilities (P/sub n/) were measured for 16 isotopes of Br, Rb, I, and Cs. Sources of chemically and mass separated nuclides were obtained from an on-line mass spectrometer facility. Neutrons were counted in a multitube polyethylene-moderated detector. The total number of precursor atoms was determined by direct counting of ions deposited on the first dynode of an electron multiplier. The P/sub n/ values from this work generally agree with earlier measurements for the longer-lived precursors but are consistently higher for the shorter-lived precursors. A log-log plot of P versus the reduced energy window (Q/sub ..beta../ - B/sub n/)/(Q/sub ..beta../ - C) gives a straight line with a slope of 6.0 +- 1.4, in agreement with simplified theoretical predictions. Half-lives of Rb and Cs nuclides measured by neutron decay curves are given.

• Research Organization: Batelle, Pacific Northwest Laboratories, Richland, Washington 99352
• OSTI ID: 7106378
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 15:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
BARYONS
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BROMINE ISOTOPES
CESIUM ISOTOPES
DECAY
DELAYED NEUTRON PRECURSORS
DELAYED NEUTRONS
ELEMENTARY PARTICLES
FERMIONS
FISSION NEUTRONS
HADRONS
HALF-LIFE
INTERACTIONS
INTERMEDIATE MASS NUCLEI
IODINE 137
IODINE 138
IODINE ISOTOPES
ISOTOPES
LEPTONIC DECAY
LIFETIME
NEUTRONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PARTICLE DECAY
PROBABILITY
RADIOISOTOPES
RUBIDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
WEAK INTERACTIONS
WEAK PARTICLE DECAY