Nuclear absorption of low energy pions and the pion-nucleus optical potential

1982 ◽  
Vol 25 (2) ◽  
pp. 952-961 ◽  
Author(s):  
J. A. Carr ◽  
H. McManus ◽  
K. Stricker-Bauer
1979 ◽  
Vol 5 (9) ◽  
pp. 1225-1231 ◽  
Author(s):  
B Gyarmati ◽  
T Vertse ◽  
L Zolani ◽  
A I Baryshnikov ◽  
A F Gurbich ◽  
...  

2002 ◽  
Vol 2 (4) ◽  
pp. 183-188 ◽  
Author(s):  
Aleksandar Tancic ◽  
M.R. Nikolic

We have extended our previous calculations to include the contribution of the random-phase approximation (RPA) (improved) optical potential to the low energy elastic scattering in the electron+He system. Our improved RPA calculations are shown to be in better agreement with the experimental values than other theoretical results.


1973 ◽  
Vol 199 (1) ◽  
pp. 121-128 ◽  
Author(s):  
J. Bommer ◽  
B. Efken ◽  
H. Fuchs ◽  
K. Grabisch ◽  
H. Kluge ◽  
...  
Keyword(s):  

1992 ◽  
Vol 01 (04) ◽  
pp. 833-844 ◽  
Author(s):  
YING-CAI WANG ◽  
F. E. SERR ◽  
E. J. MONIZ ◽  
N. TERUYA ◽  
H. DIAS ◽  
...  

The spreading and escape widths of giant resonances are evaluated by considering damped particle and hole propagation in the nucleus. The magnitude and averaged A-dependence of the isoscalar quadrupole resonance widths are reproduced qualitatively when the nucleon optical potential, fit globally to low-energy scattering, is used to damp nucleon motion. Contributions from hole state widths and from vertex corrections increase and decrease the giant resonance widths, respectively. Qualitative agreement with experimental widths is shown for 16 O , 40 Ca and 208 Pb . Comparison with recent calculations within continuum RPA is made.


Sign in / Sign up

Export Citation Format

Share Document