Charge-exchange collective excitations and sum rules

1987 ◽  
Author(s):  
Renzo Leonardi
Keyword(s):  
Charge Exchange ◽  
Sum Rules ◽  
Collective Excitations

scholarly journals Charge exchange operators sum rules and proton–neutron T=0 and T=1 pairing interactions

2003 ◽  
Vol 727 (1-2) ◽  
pp. 3-23 ◽  
Author(s):  
E. Moya de Guerra ◽  
A.A. Raduta ◽  
L. Zamick ◽  
P. Sarriguren
Keyword(s):  
Charge Exchange ◽  
Sum Rules ◽  
Pairing Interactions

SU(3)Sum Rules for Meson-Nucleon Charge-Exchange Reactions

1967 ◽  
Vol 156 (5) ◽  
pp. 1522-1524 ◽  
Author(s):  
V. Barger ◽  
D. Cline
Keyword(s):  
Charge Exchange ◽  
Sum Rules ◽  
Exchange Reactions

scholarly journals Single and Double Charge Exchange Excitations of Spin-Isospin Mode

2019 ◽  
Vol 223 ◽  
pp. 01053
Author(s):  
Hiroyuki Sagawa
Keyword(s):  
Cross Section ◽  
Charge Exchange ◽  
Sum Rules ◽  
Transition Strength ◽  
Double Charge Exchange ◽  
Double Spin ◽  
Isobaric Analog ◽  
Isobaric Analog State ◽  
Double Charge ◽  
Gamow Teller

We study the sum rules of double Gamow-Teller (DGT) excitations through double spin-isospin operator (σt­)2 In general, 2+states in the granddaughter nuclei have dominant transition strength in DGT excitations and 0+states are weak, except in T = 1 mother nuclei in which 0+strength is competitive with 2+strength. A possibility to extract the unit cross section for the DGT transition strength is pointed out in the (#x03C3;t­)2 excitation of double isobaric analog state (DIAS) in T = 1 nuclei.

Regge singularities in forward πN charge exchange: An analysis with a new family of sum rules

1968 ◽  
Vol 54 (4) ◽  
pp. 979-982 ◽  
Author(s):  
A. Della Selva ◽  
L. Masperi ◽  
R. Odorico
Keyword(s):  
Charge Exchange ◽  
Sum Rules ◽  
New Family

Sum rules for nuclear collective excitations

1979 ◽  
Vol 51 (5) ◽  
pp. 267-316 ◽  
Author(s):  
O. Bohigas ◽  
A.M. Lane ◽  
J. Martorell
Keyword(s):  
Sum Rules ◽  
Collective Excitations

A Perturbation Theory for the Population of Atomic Energy Levels in Non-Lte Plasmas

1988 ◽  
Vol 102 ◽  
pp. 343-347
Author(s):  
M. Klapisch
Keyword(s):  
Perturbation Theory ◽  
Small Parameter ◽  
Classification Scheme ◽  
Sum Rules ◽  
Energy Levels ◽  
Natural Classification ◽  
Quantum Numbers ◽  
Formal Expansion ◽  
Atomic Energy Levels ◽  
As Effects

AbstractA formal expansion of the CRM in powers of a small parameter is presented. The terms of the expansion are products of matrices. Inverses are interpreted as effects of cascades.It will be shown that this allows for the separation of the different contributions to the populations, thus providing a natural classification scheme for processes involving atoms in plasmas. Sum rules can be formulated, allowing the population of the levels, in some simple cases, to be related in a transparent way to the quantum numbers.

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