TY - JOUR
T1 - Spontaneous C14 emission from Ra223
AU - Kutschera, W.
AU - Ahmad, I.
AU - Armato, S. G.
AU - Friedman, A. M.
AU - Gindler, J. E.
AU - Henning, W.
AU - Ishii, T.
AU - Paul, M.
AU - Rehm, K. E.
PY - 1985
Y1 - 1985
N2 - The spontaneous emission of C14 from Ra223, recently discovered by Rose and Jones, has been confirmed, and the mass of the emitted particles unambiguously identified. The present measurement was performed with a Th227 source containing 9.2 mCi of Ra223. An Enge split-pole magnetic spectrograph was used to suppress the intense alpha radiation and to identify the C14 particles. The spectrograph was calibrated with tandem-accelerated beams of C14, C13, and C12. In six days of decay counting, twenty-four C14 events were observed yielding a branching ratio of (4.71.3)×10-10 for the emission of C14 from Ra223 relative to that of alpha particles. The value is in fair agreement with the result of Rose and Jones, (8.5 2.5)×10-10, and with more recent measurements from other laboratories.
AB - The spontaneous emission of C14 from Ra223, recently discovered by Rose and Jones, has been confirmed, and the mass of the emitted particles unambiguously identified. The present measurement was performed with a Th227 source containing 9.2 mCi of Ra223. An Enge split-pole magnetic spectrograph was used to suppress the intense alpha radiation and to identify the C14 particles. The spectrograph was calibrated with tandem-accelerated beams of C14, C13, and C12. In six days of decay counting, twenty-four C14 events were observed yielding a branching ratio of (4.71.3)×10-10 for the emission of C14 from Ra223 relative to that of alpha particles. The value is in fair agreement with the result of Rose and Jones, (8.5 2.5)×10-10, and with more recent measurements from other laboratories.
UR - http://www.scopus.com/inward/record.url?scp=0006723846&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.32.2036
DO - 10.1103/PhysRevC.32.2036
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AN - SCOPUS:0006723846
SN - 0556-2813
VL - 32
SP - 2036
EP - 2042
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 6
ER -