Results 21 to 30 of about 3,048,279 (321)

Monte Carlo Simulation of γ-γ Correlation Functions

Atoms, 2020
γ - γ correlation functions are mathematical expressions that describe the angular distribution of cascade γ -rays emitted from an atomic nucleus.
Mohamed Omer, Mahmoud Bakr
doaj   +1 more source

Electric quadrupole transitions in Ni XVIII [PDF]

Astronomy and Astrophysics Supplement Series, 2000
Relativistic Quantum Defect Orbital (RQDO) calculations have been performed in the LS coupling scheme on electric quadrupole (E2) transitions between levels belonging to several astrophysically important con- gurations of Ni XVIII. A number of line strengths are reported and compared with the ones found in the litera- ture.
E. Charro, I. Martín, D. Bielińska-Wąż   +2 more
openaire   +1 more source

Topological Phase Transitions in Disordered Electric Quadrupole Insulators [PDF]

Physical Review Letters, 2020
6+10 pages, 3+5 ...
Chang-An Li, Bo Fu, Zi-Ang Hu, Jian Li, Shun-Qing Shen   +4 more
openaire   +3 more sources

Projected shell model study for the yrast-band structure of the proton-rich mass-80 nuclei [PDF]

, 2000
A systematic study of the yrast-band structure for the proton-rich, even-even mass-80 nuclei is carried out using projected shell model approach. We describe the the energy spectra, transition quadrupole moments and gyromagnetic factors.
Algora, Bengtsson, Bengtsson, Billowes, Bonche, Caurier, Chandler, Chattopadhyay, Davie, de Angelis, Dejbakhsh, Dufour, Döring, Fischer, Frauendorf, Gross, Gross, H.C. Jain, Hara, Hara, Hara, Heese, Heyde, J.A. Sheikh, Kucharska, Lister, Lister, Lister, Mukherjee, Nazarewicz, Paul, Petrovici, Petrovici, R. Palit, Rudolph, Schatz, Sheikh, Skoda, Sun, Sun, Teich, Varley, Winchell, Y. Sun   +43 more
core   +2 more sources

Long-Lived Coherence on a μHz Scale Optical Magnetic Quadrupole Transition. [PDF]

Physical Review Letters
We report on the coherent excitation of the ultranarrow ^{1}S_{0}-^{3}P_{2} magnetic quadrupole transition in ^{88}Sr. By confining atoms in a state insensitive optical lattice, we achieve excitation fractions of 97(1)% and observe linewidths as narrow ...
V. Klüsener, S. Pucher, D. Yankelev, J. Trautmann, F. Spriestersbach, D. Filin, S. Porsev, M. S. Safronova, I. Bloch, S. Blatt   +9 more
semanticscholar   +1 more source

Competing Interactions, the Renormalization Group and the Isotropic-Nematic Phase Transition [PDF]

, 2007
We discuss 2D systems with Ising symmetry and competing interactions at different scales. In the framework of the Renormalization Group, we study the effect of relevant quartic interactions.
Daniel A. Stariolo, Daniel G. Barci, P. M. Chaikin, S. A. Brazovskii, S. A. Brazovskii, S. A. Brazovskii, S. A. Brazovskii   +6 more
core   +2 more sources

Precise determination of the quadrupole transition matrix element of +40 Ca via branching-fraction and lifetime measurements [PDF]

, 2016
We report the first experimental determination of the $4s \ ^{2}S_{1/2} $ $\leftrightarrow $ $3d \ ^{2}D_{5/2}$ quadrupole transition matrix element in $^{40}$Ca$^+$ by measuring the branching ratio of the $3d \ ^{2}D_{5/2} $ state decaying into the ...
H. Shao, Y. Huang, H. Guan, Chengbin Li, T. Shi, K. Gao   +5 more
semanticscholar   +1 more source

A description of the energy levels and electric quadrupole transitions of the 92Nb and 92Mo nuclei using nuclear shell model

Kuwait Journal of Science, 2022
    In current study ,92Nb and 92Mo isotopes have been determined for calculating  energy levels and electric quadrupole transition probabilities. These isotopes have different model spaces (1g9/2,1g7/2) for one proton and  (2d5/2, 1g7/2, 3s1/2, 2d3/2 ...
Mustafa .Jabbar, Fatima alfatlawi
doaj   +1 more source

Quadrupole transitions in 20Ne

Physics Letters B, 1978
Abstract Untruncated shell model calculations in the 1s-0d shell using Chung-Wildenthal effective interactions have been performed for 20 Ne and the electron scattering form factors for elastic scattering and for the excitation of 2 1 + , 2 1 + and 2 3 + states have been examined.
R.P. Singhal, R.G. Arthur, E.A. Knight, M.W.S. Macauley, D. Kelvin, A. Watt, R.R. Whitehead   +6 more
openaire   +1 more source

Electric quadrupole channel of the 7.8 eV 229 Th transition [PDF]

, 2018
The unique isomeric transition at 7.8 eV in $~^{229}\mathrm{Th}$ has a magnetic dipole ($M1$) and an electric quadrupole ($E2$) multipole mixing. So far, the $E2$ component has been widely disregarded.
P. Bilous, N. Minkov, A. P'alffy
semanticscholar   +1 more source