TY - JOUR
T1 - (p, t) Reactions on odd-a nuclei and the weak-coupling core-excitation model
AU - Seth, K. K.
AU - Saha, A.
AU - Stewart, W.
AU - Benenson, W.
AU - Lanford, W. A.
AU - Nann, H.
AU - Wildenthal, B. H.
N1 - Funding Information:
Weak-coupling ideas are often invoked in nuclear structure to relate states of neighboring nuclei \[1\ ]. Ground states of odd-A nuclei are generally considered as an odd nucleon weakly coupled to the 0 + ground states (g.s.) of the even-even cores. The correctness of this picture is borne out by the large single-particle transfer (spectroscopic factor, S ~ 1) found in most such situations. The same picture is often invoked to relate collective 2 + and 3-states in heavy even-even nuclei with corresponding multiplets, obtained by weak coupling of a single particle, in adjoining odd-A nuclei. The essential requirement for the emergence of such a picture is that the coherence of the core state must be strong enough to be not destroyed by the coupling of the odd particle. The 0 + ground states (0"~) of even-even nuclei posses this property. The highly correlated nature of the lowest excited 0 + states (0~) which occur at modest excitation in most even-even nuclei, generally goes unrecognized unless they can be interpreted as the band heads of a rota- • 1 Now at Yale University, New Haven, Connecticut. • 2 On leave of absence from Institut fiir Kernphysik der J.W. Goethe Universit~it, Frankfurt/M, Germany. • a The Michigan State University Cyclotron Laboratory is supported by the National Science Foundation.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1974/4/1
Y1 - 1974/4/1
N2 - Excited 7 2- states to which enhanced L = 0 (p, t) transitions are observed have been identified in 41Ca at 2958 keV and in 57Co at 2611 keV. A comparison of these (p, t) transitions with those to the 0+ states in 40Ca at 3353 keV and in 58Ni at 2940 keV leads to the conclusion that these states are obtained by weak-coupling of a f 7 2 particle and hole, respectively, to the excited 0+ states of the doubly even cores. It is suggested that these cases are examples of a rather general weak-coupling phenomenon.
AB - Excited 7 2- states to which enhanced L = 0 (p, t) transitions are observed have been identified in 41Ca at 2958 keV and in 57Co at 2611 keV. A comparison of these (p, t) transitions with those to the 0+ states in 40Ca at 3353 keV and in 58Ni at 2940 keV leads to the conclusion that these states are obtained by weak-coupling of a f 7 2 particle and hole, respectively, to the excited 0+ states of the doubly even cores. It is suggested that these cases are examples of a rather general weak-coupling phenomenon.
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U2 - 10.1016/0370-2693(74)90497-3
DO - 10.1016/0370-2693(74)90497-3
M3 - Article
AN - SCOPUS:0000929793
VL - 49
SP - 157
EP - 160
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 2
ER -