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Title: [sup 8]Be and [alpha] decay of [sup 16]O

Abstract

The [sup 12]C([sup 16]O,4[alpha])[sup 12]C reaction has been studied at a beam energy of 99 MeV. The data indicate the existence of sequential decays in the form [sup 16]O[sup *][r arrow]4[alpha] in the exit channel. The excitation energy of the [sup 16]O nucleus and the nature of the partition process leading to the 4[alpha] final state, has been reconstructed from the kinematics of the [alpha] particles. States have been observed at excitation energies of 17.1, 17.5, 18.0, 18.7, 19.3, and 21.4 MeV which decay into [sup 8]Be+[sup 8]Be, [sup 12]C(7.65 MeV, 0[sub 2][sup +])+[alpha] and [sup 12]C(9.64 MeV, 3[sup [minus]])+[alpha]. Relative partial decay widths for these three channels have been measured. Angular correlation measurements have been used to deduce the spins of several of the observed states, and indicate spins in the range 2 to 6[h bar].

Authors:
; ; ; ; ; ; ; ;  [1]; ;  [2]; ; ; ;  [3]; ; ;  [4];  [5]
  1. School of Physics and Space Research, University of Birmingham, Birmingham, B15 2TT (United Kingdom)
  2. Department of Physics, Nuclear Physics Laboratory, University of Oxford, Keble Road, Oxford, OX1 3RH (United Kingdom)
  3. Department of Physics, University of York, York, Y01 5DD (United Kingdom)
  4. Department of Physics, University of Surrey, Guildford, Surrey, GU2 5XH (United Kingdom)
  5. Research School of Physical Sciences and Engineering, Australian National University, Canberra (Australia)
Publication Date:
OSTI Identifier:
6402609
Resource Type:
Journal Article
Journal Name:
Physical Review, C (Nuclear Physics); (United States)
Additional Journal Information:
Journal Volume: 51:4; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; OXYGEN 16; ALPHA DECAY; ANGULAR CORRELATION; BERYLLIUM 8; CARBON 12 TARGET; EXCITED STATES; OXYGEN 16 REACTIONS; Q-VALUE; SPIN; ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; ANGULAR MOMENTUM; BERYLLIUM ISOTOPES; CHARGED-PARTICLE REACTIONS; CORRELATIONS; DECAY; ENERGY; ENERGY LEVELS; EVEN-EVEN NUCLEI; HEAVY ION REACTIONS; ISOTOPES; LIGHT NUCLEI; NUCLEAR DECAY; NUCLEAR REACTIONS; NUCLEI; OXYGEN ISOTOPES; PARTICLE PROPERTIES; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; STABLE ISOTOPES; TARGETS; 663450* - Heavy-Ion-Induced Reactions & Scattering- (1992-); 663520 - Nuclear Mass Ranges- A=6-19- (1992-)

Citation Formats

Freer, M, Clarke, N M, Curtis, N, Fulton, B R, Hall, S J, Leddy, M J, Pople, J S, Tungate, G, Ward, R P, Simmons, P M, Rae, W D.M., Chappell, S P.G., Fox, S P, Jones, C D, Watson, D L, Gyapong, G J, Singer, S M, Catford, W N, and Regan, P H. [sup 8]Be and [alpha] decay of [sup 16]O. United States: N. p., 1995. Web. doi:10.1103/PhysRevC.51.1682.
Freer, M, Clarke, N M, Curtis, N, Fulton, B R, Hall, S J, Leddy, M J, Pople, J S, Tungate, G, Ward, R P, Simmons, P M, Rae, W D.M., Chappell, S P.G., Fox, S P, Jones, C D, Watson, D L, Gyapong, G J, Singer, S M, Catford, W N, & Regan, P H. [sup 8]Be and [alpha] decay of [sup 16]O. United States. doi:10.1103/PhysRevC.51.1682.
Freer, M, Clarke, N M, Curtis, N, Fulton, B R, Hall, S J, Leddy, M J, Pople, J S, Tungate, G, Ward, R P, Simmons, P M, Rae, W D.M., Chappell, S P.G., Fox, S P, Jones, C D, Watson, D L, Gyapong, G J, Singer, S M, Catford, W N, and Regan, P H. Sat . "[sup 8]Be and [alpha] decay of [sup 16]O". United States. doi:10.1103/PhysRevC.51.1682.
@article{osti_6402609,
title = {[sup 8]Be and [alpha] decay of [sup 16]O},
author = {Freer, M and Clarke, N M and Curtis, N and Fulton, B R and Hall, S J and Leddy, M J and Pople, J S and Tungate, G and Ward, R P and Simmons, P M and Rae, W D.M. and Chappell, S P.G. and Fox, S P and Jones, C D and Watson, D L and Gyapong, G J and Singer, S M and Catford, W N and Regan, P H},
abstractNote = {The [sup 12]C([sup 16]O,4[alpha])[sup 12]C reaction has been studied at a beam energy of 99 MeV. The data indicate the existence of sequential decays in the form [sup 16]O[sup *][r arrow]4[alpha] in the exit channel. The excitation energy of the [sup 16]O nucleus and the nature of the partition process leading to the 4[alpha] final state, has been reconstructed from the kinematics of the [alpha] particles. States have been observed at excitation energies of 17.1, 17.5, 18.0, 18.7, 19.3, and 21.4 MeV which decay into [sup 8]Be+[sup 8]Be, [sup 12]C(7.65 MeV, 0[sub 2][sup +])+[alpha] and [sup 12]C(9.64 MeV, 3[sup [minus]])+[alpha]. Relative partial decay widths for these three channels have been measured. Angular correlation measurements have been used to deduce the spins of several of the observed states, and indicate spins in the range 2 to 6[h bar].},
doi = {10.1103/PhysRevC.51.1682},
journal = {Physical Review, C (Nuclear Physics); (United States)},
issn = {0556-2813},
number = ,
volume = 51:4,
place = {United States},
year = {1995},
month = {4}
}