Showing papers by "Chary Rangacharyulu published in 2005"
Kyoto University1, Pusan National University2, Osaka University3, Konan University4, Academia Sinica5, Japan Atomic Energy Agency6, Ohio University7, Chiba University8, National Defense Academy of Japan9, Wakayama Medical University10, University of Saskatchewan11, Tohoku University12, Japan Atomic Energy Research Institute13, University of Miyazaki14, Michigan State University15
TL;DR: The photo-production of mesons from Li, C, Al, and Cu at forward angles has been measured at E γ = 1.5 − 2.4 GeV, and the number of events for incoherent mesons was found to have a target mass number dependence of A 0.72 ± 0.07 in the kinematical region of | t | ⩽ 0.6 GeV 2 / c 2 as mentioned in this paper.
120 citations
Osaka University1, Japan Atomic Energy Agency2, Academia Sinica3, Pusan National University4, Konan University5, Seoul National University6, Ohio University7, Kyoto University8, Yamagata University9, Chiba University10, Wakayama Medical University11, University of Miyazaki12, Nagoya University13, University of Saskatchewan14, Tohoku University15
TL;DR: In this paper, the photoproduction of a π meson on protons was studied by means of linearly polarized photons at forward angles in the low-energy region from threshold to E{sub {gamma}}=237 GeV.
Abstract: Photoproduction of a {phi} meson on protons was studied by means of linearly polarized photons at forward angles in the low-energy region from threshold to E{sub {gamma}}=237 GeV The differential cross sections at t=- vertical bar t vertical bar{sub min} do not increase smoothly as E{sub {gamma}} increases but show a local maximum at around 20 GeV The angular distributions demonstrate that {phi} mesons are photoproduced predominantly by helicity-conserving processes, and the local maximum is not likely due to unnatural-parity processes
95 citations
TL;DR: In this article, a sum-rule approach was used to describe the low-lying orbital magnetic dipole strength in even-even nuclei using a sum rule approach, where the moments of inertia and the g factors were substituted by the parameters of the ground state rotational bands.
Abstract: The low-lying orbital magnetic dipole strength in even-even nuclei is discussed using a sum-rule approach. It is shown that both the mean excitation energies as well as the summed excitation strengths from the experiment can be described well in heavy nuclei if the moments of inertia and the g factors are substituted by the parameters of the ground-state rotational bands. The influence of the high-lying scissors mode is taken into account explicitly, leading to a successful description of the low-lying mode in heavy deformed nuclei with no free parameters. A quantitative estimate of the gross features of the high-lying mode is deduced. The application of the sum-rule approach to medium-mass nuclei is presented, and the discrepancies with the experimental data are discussed.
47 citations
TL;DR: In this paper, the photon beam asymmetries for the γ → p → K + Λ and γ − p → k + Σ 0 reactions have been measured for the photon energy range from 1.5 GeV to 2.4 GeV and for the angular range of 0.2 cm K + 60 ° at the SPring-8/LEPS facility.
4 citations
TL;DR: In this paper, the authors evaluate the temperature dependence of the beta-decay rates of the ground state and first excited state at an excitation energy of 96 keV in 19O.
Abstract: From isobaric analog symmetry arguments and nuclear shell model calculations, we evaluate the temperature dependence of the beta-decay rates of the ground state and first excited state at an excitation energy of 96 keV in 19O. It is shown that the decay from the excited level exceeds that of the ground state for T9 > 1. This feature may be of significance in the r-process and explosive nucleosynthesis.
1 citations
TL;DR: In this article, the authors pointed out that physics, as an enterprise engaged in providing a coherent description of dynamics of physical phenomena, has reached the end of road and it is also an inspiration for technological innovations which contribute to the good or demise of human civilization.
Abstract: Physics, as a discipline, attempts to discern the mysteries of physical universe and it is also an inspiration for technological innovations which contribute to the good or demise of human civilization. While it continues to have tremendous impact on the technological front, one wonders if physics, as an enterprise engaged in providing a coherent description of dynamics of physical phenomena, has reached the end of road.