DOI 10.1007/s100520000465
Measurement of spin observables
in neutron-proton elastic scattering
Part II: Rescattering parameters
J. Arnold2 - B. van den Brandt3 - M. Daum3 - Ph. Demierre1 - M. Finger4,5 - M. Finger,Jr.5 - J. Franz2 - N. Goujon-Naef1 - P. Hautle3 - R. Hess1 - A. Janata5 - J.A. Konter3 - H. Lacker2 - C. Lechanoine-Leluc1 - F. Lehar6 - S. Mango3 - D. Rapin1 - E. Rössle2 - P.A. Schmelzbach3 - H. Schmitt2 - P. Sereni2 - M. Slunecka4,5 - A. Teglia1,3 - B. Vuaridel1
1 DPNC, Université de Genève, 1211 Genève4, Switzerland
2 Fakultät für Physik der Universität Freiburg, 79104 Freiburg, Germany
3 PSI, Paul-Scherrer-Institut, 5232 Villigen-PSI, Switzerland
4 MFF, Karlova Universita, 18000 Praha, Czech Republic
5 LNP, Joint Institute for Nuclear Research, 141980 Dubna, Russia
6 DAPNIA/SPP, CEA/Saclay, 91191 Gif-sur-Yvette (CEDEX) France
Received: 24 May 2000 / Published online: 31 August 2000 - © Springer-Verlag 2000
Abstract
A double scattering experiment, performed at the
Paul-Scherrer-Institut (PSI), has measured a large variety of spin
observables for free np elastic scattering from 260 to 535 MeV in the
c.m. angle range from 60
to 164
.
Results are presented
for the depolarization parameters
Donon,
Dos''os and
Dos''ok, the polarization transfer parameters
Konno,
Kos''so and
Kos''ko, and the 3-index parameters
Nonkk,
Nos''kn,
Nos''sn and
Nos''ns. The
last four parameters have been measured for the first time in this
energy range. These measurements considerably improve the data base
available for neutron-proton scattering and will allow a direct
reconstruction of the I = 0 scattering matrix, providing complete
information about the nucleon-nucleon interaction in a model-independent
way.
Copyright Società Italiana di Fisica, Springer-Verlag 2000