High lying E0 strength in C-12

Journals published by the American Physical Society can be found at http://publish.aps.org/The excitation region in C-12 from 7 MeV<E-x<60 MeV was studied with inelastic scattering of 240-MeV alpha particles at small angles including 0 degrees where E0 strength is enhanced. The strengths of known 0(+) states at E-x = 7.655 MeV and E-x = 10.3 MeV were obtained and E0 strength was observed to be distributed between E-x = 14 MeV and E-x = 30 MeV with a centroid of 21.5 +/- 0.4 MeV and an ms width of 3.1 +/- 0.2 MeV containing 14.5 +/- 4.0% of the isoscalar E0 energy-weighted sum rule. Angular distributions and strengths of the E-x =4.439 MeV 2(+), 9.641 MeV 3(-), and 10.844 MeV 1(-) states were also obtained. [S0556-2813(98)05704-5]

Nuclear-Matter Compressibility from Isoscalar Giant Monopole Resonance

Journals published by the American Physical Society can be found at http://publish.aps.org/We examine the status of the nuclear matter compressibility K(nm) obtained from experimental data of the strength distribution of the giant monopole resonance in nuclei and employing a least-squares fit to a semiempirical expansion of the nucleus compressibility K(A) in A-1/3. We present arguments indicating that all the coefficients of this expansion must be determined by a fit to the data. In our analysis we have used the entire data set, correcting for systematic energy differences between data sets measured in different laboratories, and applying the same criteria to all sets in extracting the uncertainties. Contrary to recent statements by Sharma and collaborators, we find that the present complete data set is not adequate to limit the range of K(nm) to better than about a factor of 1.7 (200 to 350 MeV)

Monopole Strength in Ni-58

Journals published by the American Physical Society can be found at http://publish.aps.org/Differential cross-section data from 0-degrees to 8-degrees for inelastic scattering of 129 MeV alpha particles exciting Ni-58 in the region of 14-22 MeV have been analyzed to explore the existence of monopole strength at approximately E(x) = 17 MeV. The angular distribution for a peak at E(x) = 17.0 MeV with GAMMA = 4.0 MeV is consistent with an E0 transition exhausting 19 +/- 10% of the E0 energy-weighted sum rule (EWSR). The angular distributions for peaks at E(x) = 16.1 and 20.4 MeV with GAMMA = 4.7 and 4.4 MeV, respectively, were fit by 52 +/- 10% of the E2 EWSR and a combination of E2 (6.9 +/- 2.0 EWSR) and E0 (2.9(-2.9)+2.1% EWSR)

Giant resonances in (116)Sn from 240 MeV (6)Li scattering

Journals published by the American Physical Society can be found at http://publish.aps.org/Giant resonances in (116)Sn were measured by inelastic scattering of (6)Li ions at E(6)Li=240 MeV over the angle range 0(degrees)-6(degrees). Isoscalar E0-E3 strength distributions were obtained with a double folding model analysis. A total of 106(-11)(+27)% of the E0 EWSR was found in the excitation energy range from 8 MeV to 30 MeV with a centroid (m(1)/m(0)) energy 15.39(-0.20)(+0.35) MeV in agreement with results obtained with alpha inelastic scattering

Study of Hole-State Analogs in Mo Isotopes

Journals published by the American Physical Society can be found at http://publish.aps.org

Single-Particle Strengths for Quasibound Levels in Cl-33

Journals published by the American Physical Society can be found at http://publish.aps.org

Splitting of the giant monopole and quadrupole resonances in Sm-154

Journals published by the American Physical Society can be found at http://publish.aps.org/Strength functions for the isoscalar giant monopole and quadrupole resonances in Sm-154 have been measured with inelastic scattering of 240 MeV alpha particles at small angles. The E0 strength distribution containing (104(-20)(+15))% of the energy-weighted sum rule (EWSR) is consistent with two peaks at E-x = 12.1 +/- 0.4 MeV and 15.5 +/- 0.3 MeV containing (36 +/- 10)% and (68 /- 9)% of the EWSR and the E2 strength distribution containing (103(-20)(+18))% of the EWSR is consistent with three peaks at E-x = 11.3 +/- 0.2 MeV, 14.5 +/- 0.5 MeV, and 17.5 +/- 0.5 MeV containing (44 +/- 7)%, (44 +/- 8)%, and (15 +/- 8)%, respectively, of the EWSR. [S0556-2813(99)04812-8]

Isoscalar giant resonances in Si-28 and the mass dependence of nuclear compressibility

Journals published by the American Physical Society can be found at http://publish.aps.org/The giant resonance region from 8 MeV < E-x < 55 MeV in Si-28 has been studied with inelastic scattering of 240 MeV alpha particles at small angles including 0degrees. Strength corresponding to 81 +/- 10%, 68 +/- 9%, and 15 +/-4% of the isoscalar E0, E2, and E1 sum rules, respectively, was identified with centroids of 21.25 +/-0.38 MeV, 18.54 +/- 0.25 MeV, 19.15 +/- 0.60 MeV, and rms widths of 6.4 +/- 0.6 MeV, 4.7 +/- 0.6 MeV, and 6.9 +/- 0.7 MeV. The mass dependence of the compression modulus of finite nuclei is shown to be reasonably well reproduced from A = 24 to 208 in relativistic mean field calculations with the NLC interaction having K-nm 5225 MeV and in nonrelativistic calculations with the RATP interaction having K-nm 5240 MeV