Published January 28, 1985
| Version v1
Journal article
Discovery of radioactive decay of 222Ra and 224Ra by 14C emission
- 1. Physics Department, University of California, Berkeley, California
Description
Using the ISOLDE on-line isotope separator at CERN to produce sources of 221Fr, 221Ra, 222Ra, 223Ra, and 224Ra, and using polycarbonate track-recording films sensitive to energetic carbon nuclei but not to alpha particles, we have discovered two new cases of the rare 14C decay mode: in 222Ra and 224Ra. Our results for branching ratios, B, relative to alpha decay are for 221Fr and 221Ra, B<4.4 x 10-12; for 222Ra, B = (3.7 +- 0.6) x 10-10; for 223Ra, B = (6.1 +- 1.0) x 10-10; for 224Ra, B = (4.3 +- 1.2) x 10-11. .AE
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 54
- Journal Issue
- 4
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 297-299
- ISSN
- 0031-9007
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 16066752
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S07: ISOTOPES AND RADIATION SOURCES;
- Descriptors DEI
- ALPHA DECAY; BRANCHING RATIO; CARBON 14; CERN SYNCHROCYCLOTRON; DECAY; FRANCIUM 221; ISOTOPE SEPARATION; MEV RANGE 100-1000; PROTON REACTIONS; RADIUM 222; RADIUM 224; THORIUM
- Descriptors DEC
- ACCELERATORS; ACTINIDES; ALPHA DECAY RADIOISOTOPES; BARYON REACTIONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON ISOTOPES; CYCLIC ACCELERATORS; DAYS LIVING RADIOISOTOPES; ELEMENTS; ENERGY RANGE; EVEN-EVEN NUCLEI; FRANCIUM ISOTOPES; HADRON REACTIONS; HEAVY NUCLEI; ISOTOPES; LIGHT NUCLEI; METALS; MEV RANGE; MINUTES LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; ODD-EVEN NUCLEI; RADIOISOTOPES; RADIUM ISOTOPES; SECONDS LIVING RADIOISOTOPES; SEPARATION PROCESSES; SYNCHROCYCLOTRONS; YEARS LIVING RADIOISOTOPES