Results 61 to 70 of about 114,281 (199)

Phases and phase transitions in the algebraic microscopic shell model

EPJ Web of Conferences, 2016
We explore the dynamical symmetries of the shell model number conserving algebra, which define three types of pairing and quadrupole phases, with the aim to obtain the prevailing phase or phase transition for the real nuclear systems in a single shell ...
Georgieva A. I., Drumev K. P.
doaj   +1 more source

Microscopic theory of quadrupolar ordering in TmTe

, 2000
We have calculated the crystal electric field of TmTe (T>T_Q) and have obtained that the ground state of a Tm 4f hole is the $\Gamma_7$ doublet in agreement with Mossbauer experiments. We study the quadrupole interactions arising from quantum transitions
A. V. Nikolaev, A. V. Nikolaev, A. V. Nikolaev, A. V. Nikolaev, B. B. Triplett, C. J. Bradley, D. J. Newman, D. J. Newman, D. J. Singh, D. Lamoen, E. Bucher, E. Clementyev, G. V. Ionova, H. R. Ott, H. T. Stokes, H. Yasuda, J. Tang, J.-M. Mignot, J.-M. Mignot, K. H. Michel, K. H. Michel, K. H. Michel, K. Parlinski, K. R. Lea, K. W. H. Stevens, M. R. Norman, M. T. Hutchings, O. K. Andersen, O. V. Kovalev, P. Link, P. Link, P. Link, P. Wachter, R. Heid, R. M. Lynden-Bell, R. Shiina, R. Shiina, R. Suryanarayanan, S. E. Barnes, S. Heathman, T. Kasuya, T. Matsumura, T. Matsumura, T. Matsumura, T. Matsumura, Y. Lassailly   +45 more
core   +1 more source

Multicritical Points And Reentrant Phenomenon In The BEG Model

, 1992
The Blume - Emery - Griffiths model is investigated by use of the cluster variation method in the pair approximation. We determine the regions of the phase space where reentrant phenomenon takes place.
Alessandro Pelizzola, An, Berker, Bethe, Blume, Buzano, Carla Buzano, Chakraborty, de Alcantara Bonfim, de Alcantara Bonfim, Jain, Kaneyoshi, Kaneyoshi, Kikuchi, Kikuchi, Mukamel, Saul, Sivardiére, SáBarreto, Tucker   +19 more
core   +2 more sources

Evidence for prevalent Z = 6 magic number in neutron-rich carbon isotopes

Nature Communications, 2018
Magic numbers are associated with the stability of atomic nuclei. Here, the authors analyse the proton radii, binding energies and electric quadrupole transition rates of neutron-rich carbon isotopes at proton number six and use nuclear structure models ...
D. T. Tran, H. J. Ong, G. Hagen, T. D. Morris, N. Aoi, T. Suzuki, Y. Kanada-En’yo, L. S. Geng, S. Terashima, I. Tanihata, T. T. Nguyen, Y. Ayyad, P. Y. Chan, M. Fukuda, H. Geissel, M. N. Harakeh, T. Hashimoto, T. H. Hoang, E. Ideguchi, A. Inoue, G. R. Jansen, R. Kanungo, T. Kawabata, L. H. Khiem, W. P. Lin, K. Matsuta, M. Mihara, S. Momota, D. Nagae, N. D. Nguyen, D. Nishimura, T. Otsuka, A. Ozawa, P. P. Ren, H. Sakaguchi, C. Scheidenberger, J. Tanaka, M. Takechi, R. Wada, T. Yamamoto   +39 more
doaj   +1 more source

Reduced transition probabilities for the gamma decay of the 7.8 eV isomer in $^{229}$Th

, 2017
The reduced magnetic dipole and electric quadrupole transition probabilities for the radiative decay of the $^{229}$Th 7.8 eV isomer to the ground state are predicted within a detailed nuclear-structure model approach. We show that the presence and decay
Minkov, Nikolay, Pálffy, Adriana
core   +1 more source

Transition form factors: $\gamma^\ast + p \to \Delta(1232)$, $\Delta(1600)$

, 2019
Electroproduction form factors describing the $\gamma^\ast p \to \Delta^+(1232), \Delta^+(1600)$ transitions are computed using a fully-dynamical diquark-quark approximation to the Poincar\'e-covariant three-body bound-state problem in relativistic ...
Chen, Chen, Cui, Zhu-Fang, Lu, Ya, Roberts, Craig D., Schmidt, Sebastian M., Segovia, Jorge, Zong, Hong-Shi   +6 more
core   +2 more sources

Infrared extrapolations of quadrupole moments and transitions

Physical Review C, 2016
We study the convergence of bound-state quadrupole moments in finite harmonic oscillator spaces. We derive an expression for the infrared extrapolation for the quadrupole moment of a nucleus and benchmark our results using different model interactions for the deuteron.
Odell, D., Papenbrock, T., Platter, L.
openaire   +3 more sources

Registration of a Quadrupole Transition in High-Energy ⁸⁸Sr⁺ Ions Obtained by Laser Ablation Method

Photonics
In this paper, we demonstrate the interaction of 674 nm laser radiation with a clock quadrupole transition in high-energy 88Sr+ ions obtained by laser ablation. The results of the spectrometry of the clock and the pump transitions are presented.
Evgeny Telnov, Petr Borisyuk, Dmitry Tregubov, Daniil Provorchenko, Konstantin Trichev, Pavel Cherepanov   +5 more
doaj   +1 more source

Onset of collectivity in neutron-rich Sr and Kr isotopes: Prompt spectroscopy after Coulomb excitation at REX-ISOLDE, CERN

EPJ Web of Conferences, 2013
A rapid onset of quadrupole deformation is known to occur around the neutron number 60 in the neutron-rich Zr and Sr isotopes. This shape change has made the neutron-rich A = 100 region an active area of experimental and theoretical studies for many ...
Clément E., Görgen A., Dijon A., de France G., Bastin B., Blazhev A., Bree N., Butler P., Delahaye P., Ekstrom A., Georgiev G., Hasan N., Iwanicki J., Jenkins D., Korten W., Larsen A.C., Ljungvall J., Moschner K., Napiorkowski P., Pakarinen J., Petts A., Renstrom T., Seidlitz M., Siem S., Sotty C., Srebrny J., Stefanescu I., Tveten G.M., Van de Walle J., Warr N., Wrzosek-Lipska K., Zielińska M., Bauer C., Bruyneel B., Butterworth J., Fitzpatrick C., Fransen C., Gernhäuser R., Hess H., Lutter R., Marley P., Reiter P., Siebeck B., Vermeulen M., Wiens A., De Witte H.   +45 more
doaj   +1 more source

Origin of the electric hexadecapole isomer in 93Mo [PDF]

EPJ Web of Conferences
We present a shell-model analysis of 93Mo to investigate the un­usual behavior of its 21/2+ isomer - a prominent candidate for nuclear excita­tion by electronic capture.
Maheshwari B., Van Isacker P., Walker P. M.   +2 more
doaj   +1 more source