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Direct decay of the GQR in $^(40)$Ca through alpha-particle emission
Fallot M., Scarpaci J.A., Frascaria N., Blumenfeld Y., Chbihi A. et al
Physics Letters B 613 (2005) 128-133 - http://hal.in2p3.fr/in2p3-00024224
Physique/Physique Nucléaire Expérimentale
Direct decay of the GQR in $^{40}$Ca through alpha-particle emission
M. Fallot1, 2, J.A. Scarpaci1, N. Frascaria1, Y. Blumenfeld1, A. Chbihi3, Ph. Chomaz3, P. Desesquelles1, J. Frankland3, E. Khan1, J.L. Laville, E. Plagnol1, 4, E.C. Pollacco, P. Roussel-Chomaz3, J.C. Roynette1, A. Shrivastava1, 5, T. Zerguerras1
1 :  IPNO - Institut de Physique Nucléaire d'Orsay
http://ipnweb.in2p3.fr
CNRS : UMR8608 – IN2P3 – Université Paris XI - Paris Sud
IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX
France
2 :  SUBATECH - Laboratoire SUBATECH Nantes
http://www-subatech.in2p3.fr/
CNRS : UMR6457 – IN2P3 – Université de Nantes – École Nationale Supérieure des Mines - Nantes
4, rue Alfred Kastler - 44070 Nantes Cedex 03
France
3 :  GANIL - Grand Accélérateur National d'Ions Lourds
http://www.ganil-spiral2.eu
CNRS : UPR3266 – IN2P3 – CEA : DSM/GANIL
Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5
France
4 :  PCC - Physique Corpusculaire et Cosmologie - Collège de France
CNRS : UMR7553 – IN2P3 – Université Paris VII - Paris Diderot
11, place Marcelin Berthelot - 75231 Paris Cedex 05
France
5 :  BARC - Bhabha Atomic Research Center
Bhabha Atomic Research Center
Mumbai
Inde
Inelastic scattering of 40Ca on 40Ca at 50 MeV/A has been measured at the GANIL facility in coincidence with light charged particles. For the first time, the SPEG spectrometer was associated with 240 CsI(Tl) scintillators of the INDRA 4π array. The missing energy method, successfully used in previous experiments to study the nucleon decay of collective states is applied to the study of alpha-particle decay of the GQR. A significant direct decay branch by alpha-particles of the GQR in 40Ca is measured for the first time.

Articles dans des revues avec comité de lecture
2005
Physics Letters B (Phys. Lett. B)
Publisher Elsevier
ISSN 0370-2693 
613
128-133

24.30.Cz; 23.60.+e; 24.50.+g
NESTER PTH
Giant resonances – Inelastic scattering – Alpha decay – Direct decay