Alpha-decay properties of /sup 205-208/Fr: Identification of /sup 206/Fr/sup m/

Journal Article · Fri May 01 00:00:00 EDT 1981 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.23.2342· OSTI ID:6531840

Ritchie, B G; Toth, K S; Carter, H K; Mlekodaj, R L; Spejewski, E H

Alpha-particle and ..gamma..-ray spectral measurements were made for /sup 205-208/Fr. A new a emitter (T/sub 1/2/ = 0.7 +- 0.1 sec and E/sub a/ = 6.930 +- 0.005 MeV) was observed and identified with the decay of a previously unknown isomer in /sup 206/Fr. From the a particle and g ray intensities, a decay branching ratios were deduced for /sup 205-208/Fr utilizing available information concerning the nuclides' (electron capture+positron) decay properties. Reduced widths were calculated and compared with those of neighboring nuclei.

• Research Organization: University of South Carolina, Columbia, South Carolina 20208
• OSTI ID: 6531840
• Journal Information: Phys. Rev., C; (United States), Vol. 23:5
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
FRANCIUM 205
ALPHA DECAY
FRANCIUM 206
FRANCIUM 207
FRANCIUM 208
BETA-PLUS DECAY
BRANCHING RATIO
ELECTRON CAPTURE
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
GAMMA SPECTRA
HALF-LIFE
IRIDIUM
ISOMERIC NUCLEI
ISOTOPE SEPARATION
MEV RANGE 100-1000
NEON 20 REACTIONS
ORNL ISOCHRONOUS CYCLOTRON
ACCELERATORS
ALKALI METAL ISOTOPES
BETA DECAY
CAPTURE
CHARGED-PARTICLE REACTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
DATA
DECAY
ELEMENTS
ENERGY RANGE
FRANCIUM ISOTOPES
HEAVY ION REACTIONS
HEAVY NUCLEI
INFORMATION
ISOCHRONOUS CYCLOTRONS
ISOTOPES
METALS
MEV RANGE
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PLATINUM METALS
REFRACTORY METALS
SEPARATION PROCESSES
SPECTRA
TRANSITION ELEMENTS
651922* - Nuclear Properties & Reactions
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