Discovery of radioactive decay of /sup 222/Ra and /sup 224/Ra by /sup 14/C emission
Journal Article
·
· Phys. Rev. Lett.; (United States)
Using the ISOLDE on-line isotope separator at CERN to produce sources of /sup 221/Fr, /sup 221/Ra, /sup 222/Ra, /sup 223/Ra, and /sup 224/Ra, 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 /sup 14/C decay mode: in /sup 222/Ra and /sup 224/Ra. Our results for branching ratios, B, relative to alpha decay are for /sup 221/Fr and /sup 221/Ra, B<4.4 x 10/sup -12/; for /sup 222/Ra, B = (3.7 +- 0.6) x 10/sup -10/; for /sup 223/Ra, B = (6.1 +- 1.0) x 10/sup -10/; for /sup 224/Ra, B = (4.3 +- 1.2) x 10/sup -11/. .AE
- Research Organization:
- Physics Department, University of California, Berkeley, California
- OSTI ID:
- 5919865
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 54:4; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Thesis/Dissertation
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·
OSTI ID:5772870
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Journal Article
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Sun Oct 01 00:00:00 EDT 1961
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OSTI ID:4833453
NEW ISOTOPES OF EMANATION AND FRANCIUM: Em$sup 223$, Em$sup 224$, AND Fr$sup 22$$sup 4$
Journal Article
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Sat Dec 31 23:00:00 EST 1960
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OSTI ID:4021391
Related Subjects
07 ISOTOPE AND RADIATION SOURCES
070100 -- Physical Isotope Separation
652022* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Radioactive Decay-- (-1987)
652025 -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ACTINIDES
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BRANCHING RATIO
CARBON 14
CARBON ISOTOPES
CERN SYNCHROCYCLOTRON
CHARGED-PARTICLE REACTIONS
CYCLIC ACCELERATORS
DAYS LIVING RADIOISOTOPES
DECAY
ELEMENTS
ENERGY RANGE
EVEN-EVEN NUCLEI
FRANCIUM 221
FRANCIUM ISOTOPES
HADRON REACTIONS
HEAVY NUCLEI
ISOTOPE SEPARATION
ISOTOPES
LIGHT NUCLEI
METALS
MEV RANGE
MEV RANGE 100-1000
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PROTON REACTIONS
RADIOISOTOPES
RADIUM 222
RADIUM 224
RADIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SEPARATION PROCESSES
SYNCHROCYCLOTRONS
THORIUM
YEARS LIVING RADIOISOTOPES
070100 -- Physical Isotope Separation
652022* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Radioactive Decay-- (-1987)
652025 -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ACTINIDES
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BRANCHING RATIO
CARBON 14
CARBON ISOTOPES
CERN SYNCHROCYCLOTRON
CHARGED-PARTICLE REACTIONS
CYCLIC ACCELERATORS
DAYS LIVING RADIOISOTOPES
DECAY
ELEMENTS
ENERGY RANGE
EVEN-EVEN NUCLEI
FRANCIUM 221
FRANCIUM ISOTOPES
HADRON REACTIONS
HEAVY NUCLEI
ISOTOPE SEPARATION
ISOTOPES
LIGHT NUCLEI
METALS
MEV RANGE
MEV RANGE 100-1000
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PROTON REACTIONS
RADIOISOTOPES
RADIUM 222
RADIUM 224
RADIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SEPARATION PROCESSES
SYNCHROCYCLOTRONS
THORIUM
YEARS LIVING RADIOISOTOPES