LOCALIZED 1H-OMEGA PARTICLE-HOLE STRENGTH IN NUCLEI

BLASI, N; BORDEWIJK, JA; BORGHOLS, WTA; DEJAGER, CW; DELEO, R; DENHEIJER, P; DEVRIES, H; EMERY, GT; FORTIER, S; GALES, S; HARAKEH, MN; HOFSTEE, MA; LANGEVINJOLIOT, H; MICHELETTI, S; MORLET, M; PIGNANELLI, M; SCHIPPERS, JM; VANDENBERG, AM; VANDERWERF, SY; VANDERWOUDE, A; WILLIS, A

LOCALIZED 1H-OMEGA PARTICLE-HOLE STRENGTH IN NUCLEI

Authors: N BLASI
JA BORDEWIJK
WTA BORGHOLS
CW DEJAGER
R DELEO
P DENHEIJER
H DEVRIES
GT EMERY
S FORTIER
S GALES
MN HARAKEH
MA HOFSTEE
H LANGEVINJOLIOT
S MICHELETTI
M MORLET
M PIGNANELLI
JM SCHIPPERS
AM VANDENBERG
SY VANDERWERF
A VANDERWOUDE
A WILLIS
Publication date: 12 June 1995
Publisher

Abstract

A cross section enhancement, persisting to high momentum transfer, has been observed around 1HBAR omega in excitation energy in spectra from inelastic proton-, alpha- and electron scattering on Zr-90, Sn-116, Pt-196 and Pb-208. Data are presented for (p,p') at 201 MeV, (alpha,alpha') at 120 MeV and analyzed together with existing data obtained with 133.8 MeV polarized ((p) over right arrow,p') on Sn-116 and electron-scattering data on Sn-116 and Pt-196. Two different interpretations of the observed enhancement are discussed: that of the incoherent sum of all 1HBAR omega cross section and alternatively the sum over the isoscalar normal modes of all multipolarities