Browsing by Subject "EXCITATION"
Now showing items 1-20 of 24
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Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei
(American Physical Society, 2010)Expressing explicitly the parameters of the standard Skyrme interaction in terms of the macroscopic properties of asymmetric nuclear matter, we show in the Skyrme-Hartree-Fock approach that unambiguous correlations exist ... -
Dielectronic-Recombination Cross-Sections of Hydrogenlike Argon
(American Physical Society, 1991)Relative dielectronic-recombination cross sections for hydrogenlike argon are presented. The contributions of the KLL, KLM, KLN, KLO, and KLP groups of resonances are compared to theoretical calculations. The experimental ... -
Functional Keldysh theory of spin torques
(American Physical Society, 2007)We present a microscopic treatment of current-induced torques and thermal fluctuations in itinerant ferromagnets based on a functional formulation of the Keldysh formalism. We find that the nonequilibrium magnetization ... -
Gamow-Teller strength of Mg-26
(American Physical Society, 1996)We have measured cross sections for (d,He-2)-induced reactions on Mg-26 at an energy of E(d)=125.2 MeV. The measured Gamow-Teller strength is significantly smaller than that inferred from (p,n) reactions. We demonstrate ... -
Giant monopole resonance strength in Ca-40
(American Physical Society, 1997)The giant resonance region in Ca-40 was studied with inelastic scattering of 240 MeV alpha particles at small angles including 0 degrees. A peak at E-x = 17.5 +/- 0.4 MeV with Gamma = 4.95 +/- 0.25 MeV was found to contain ... -
Giant monopole resonance strength in Si-28
(American Physical Society, 1998)The giant resonance region in Si-28 was studied with inelastic scattering of 240 MeV alpha particles at small angles including 0 degrees. The giant resonance peak extended from E-x=12 MeV to 35 MeV and E0 strength corresponding ... -
Giant monopole strength in Ni-58
(American Physical Society, 2000)The strength distribution of the giant monopole resonance in Ni-58 has been measured from E-x = 10 to 35 MeV using small-angle scattering of 240-MeV alpha particles. E0 strength corresponding to 74(-12)(+22)% of the E0 ... -
Giant resonances in (116)Sn from 240 MeV (6)Li scattering
(American Physical Society, 2009)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 ... -
Giant resonances in Mg-24
(American Physical Society, 1999)The giant resonance region in Mg-24 was studied with inelastic scattering of 240 MeV alpha particles at small angles including 0 degrees. The giant resonance peak was found to extend up to E-X = 41 MeV. Isoscalar E0, E1, ... -
Giant resonances in O-16
(American Physical Society, 2001)Giant resonances in O-16 have been studied with inelastic scattering of 240 MeV alpha particles at small angles, Isoscalar E0, E1, and E2 strength corresponding to 48 +/- 10%, 32 +/- 7%, and 53 +/- 10%, of the respective ... -
Giant resonances in Ti-46,Ti-48
(American Physical Society, 2006)The giant resonance region from 9 MeV < E-x < 55 MeV in Ti-46 and Ti-48 has been studied with inelastic scattering of 240 MeV alpha particles at small angles including 0(degrees). Isoscalar monopole strength in Ti-46 (Ti-48) ... -
High energy octupole resonance in Sn-116
(American Physical Society, 1996)The region of excitation energy from 7 less than or equal to E(x) less than or equal to 38 MeV in Sn-116 was studied with inelastic scattering of 240 MeV alpha particles. Parameters obtained for the isoscalar giant monopole ... -
High lying E0 strength in C-12
(American Physical Society, 1998)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 ... -
Improved fluorescence-enhanced optical imaging and tomography by enhanced excitation light rejection
(2009-05-15)Fluorescence enhanced optical imaging and tomography studies involve the detection of weak fluorescent signals emanating from nano- to picomolar concentrations of exogenous or endogenously produced fluorophore concurrent ... -
Isoscalar E0-E3 strength in Sn-116, Sm-144, Sm-154, and Pb-208
(American Physical Society, 2004)The giant resonance region from 10 MeV<E-x<55 MeV in Sn-116, Sm-144, Sm-154, and Pb-208 has been studied with inelastic scattering of 240 MeV alpha particles at small angles including 0degrees. Essentially all of the ... -
Isoscalar electric multipole strength in C-12
(American Physical Society, 2003)The excitation region in C-12 below E-x=45 MeV was studied using 240 MeV alpha-particle scattering. Elastic scattering was measured from theta(c.m.)=3.8degrees to 49.4degrees and density dependant folding optical model ... -
Isoscalar giant dipole resonance in Zr-90, Sn-116, and Pb-208
(American Physical Society, 2001)Strength functions for isoscalar dipole excitations in Zr-90, Sn-116, and Pb-208 have been measured with inelastic scattering of 240 MeV alpha particles at small angles. The isoscalar E1 strength distribution in each nucleus ... -
Isoscalar giant resonances for nuclei with mass between 56 and 60
(American Physical Society, 2006)The giant resonance region from 10 MeV < E-x < 62 MeV in Fe-56, Ni-58, and Ni-60 has been studied with inelastic scattering of 240 MeV alpha particles at small angles, including 0 degrees. Most of the expected isoscalar ... -
Laser-excited acoustic oscillations in silver and bismuth nanowires
(American Physical Society, 2007)Coherent acoustic oscillations in Bi and Ag nanowire samples were studied with a femtosecond pump-probe technique and detection of the scattered light. The observed optical and acoustic properties reflect the nanostructure ... -
Magnetization relaxation in (Ga,Mn)As ferromagnetic semiconductors
(American Physical Society, 2004)We describe a theory of Mn local-moment magnetization relaxation due to p-d kinetic-exchange coupling with the itinerant-spin subsystem in the ferromagnetic semiconductor (Ga,Mn)As alloy. The theoretical Gilbert damping ...