T. Nakamura

Publication List Details

Period

1963 - 2008

Number

1000

Co-Authors

Identification of new isotopes $^{125}$Pd and $^{126}$Pd produced by in-flight fission of 345 MeV/nucleon $^{238}$U: first results from the RIKEN RI beam factory (2008)

Ohnishi, T., Kubo, T., Kusaka, K., Yoshida, A., Yoshida, K., Fukuda, N., ...

A search for new isotopes using in-flight fission of a 345 MeV/nucleon $^{238}$U beam has been carried out in the commissioning experiment of the next-generation in-flight radioactive beam separator...

Identification of new isotopes $^{125}$Pd and $^{126}$Pd produced by in-flight fission of 345 MeV/nucleon $^{238}$U: first results from the RIKEN RI beam factory (2008)

Ohnishi, T., Kubo, T., Kusaka, K., Yoshida, A., Yoshida, K., Fukuda, N., ...

A search for new isotopes using in-flight fission of a 345 MeV/nucleon $^{238}$U beam has been carried out in the commissioning experiment of the next-generation in-flight radioactive beam separator...

Identification of new isotopes $^{125}$Pd and $^{126}$Pd produced by in-flight fission of 345 MeV/nucleon $^{238}$U: first results from the RIKEN RI beam factory (2008)

Ohnishi, T., Kubo, T., Kusaka, K., Yoshida, A., Yoshida, K., Fukuda, N., ...

A search for new isotopes using in-flight fission of a 345 MeV/nucleon $^{238}$U beam has been carried out in the commissioning experiment of the next-generation in-flight radioactive beam separator...

Mesospheric gravity waves observed near equatorial and low?middle latitude stations: wave characteristics and reverse ray tracing results (2008)

Wrasse, C. M., Nakamura, T., Takahashi, H., Medeiros, A. F., Taylor, M. J., Gobbi, D., ...

Gravity wave signatures were extracted from OH airglow observations using all-sky CCD imagers at four different stations: Cachoeira Paulista (CP) (22.7° S, 45° W) and São João do Cariri (7.4° S,...

Climatological lower thermosphere winds as seen by ground-based and space-based instruments (2008)

Forbes, J. M., Portnyagin, Yu. I., Skinner, W., Vincent, R. A., Solovjova, T., Merzlyakov, E., ...

Comparisons are made between climatological dynamic fields obtained from ground-based (GB) and space-based (SB) instruments with a view towards identifying SB/GB intercalibration issues for TIMED and...

An improvement of wind velocity estimation from radar Doppler spectra in the upper mesosphere (2008)

Takeda, S., Nakamura, T., Tsuda, T.

We have developed a new parameter estimation method for Doppler wind spectra in the mesosphere observed with an MST radar such as the MU radar in the DBS (Doppler Beam Swinging) mode. Off-line...

Gravity wave intensity and momentum fluxes in the mesosphere over Shigaraki, Japan (35°N, 136°E) during 1986-1997 (2008)

Gavrilov, N. M., Fukao, S., Nakamura, T.

Averaged seasonal variations of wind perturbation intensities and vertical flux of horizontal momentum produced by internal gravity waves (IGWs) with periods 0.2-1 h and 1-6 h are studied at the...

Validation of HRDI MLT winds with meteor radars (2008)

Hasebe, F., Tsuda, T., Nakamura, T., Burrage, M. D.

A validation study of the mesospheric and lower-thermospheric (MLT) wind velocities measured by the High-Resolution Doppler Imager (HRDI) on board the Upper-Atmosphere Research Satellite (UARS) has...

An intercomparison between the GSWM, UARS, and ground based radar observations: a case-study in January 1993 (2008)

Palo, S. E., Hagan, M. E., Meek, C. E., Vincent, R. A., Burrage, M. D., Mclandress, C., ...

The Global-Scale Wave Model (GSWM) is a steady-state two-dimensional linearized model capable of simulating the solar tides and planetary waves. In an effort to understand the capabilities and...

Mesospheric gravity waves observed near equatorial and low?middle latitude stations: wave characteristics and reverse ray tracing results (2008)

Wrasse, C. M., Nakamura, T., Takahashi, H., Medeiros, A. F., Taylor, M. J., Gobbi, D., ...

Gravity wave signatures were extracted from OH airglow observations using all-sky CCD imagers at four different stations: Cachoeira Paulista (CP) (22.7° S, 45° W) and São João do Cariri (7.4° S,...

Climatological lower thermosphere winds as seen by ground-based and space-based instruments (2008)

Forbes, J. M., Portnyagin, Yu. I., Skinner, W., Vincent, R. A., Solovjova, T., Merzlyakov, E., ...

Comparisons are made between climatological dynamic fields obtained from ground-based (GB) and space-based (SB) instruments with a view towards identifying SB/GB intercalibration issues for TIMED and...

An improvement of wind velocity estimation from radar Doppler spectra in the upper mesosphere (2008)

Takeda, S., Nakamura, T., Tsuda, T.

We have developed a new parameter estimation method for Doppler wind spectra in the mesosphere observed with an MST radar such as the MU radar in the DBS (Doppler Beam Swinging) mode. Off-line...

Gravity wave intensity and momentum fluxes in the mesosphere over Shigaraki, Japan (35°N, 136°E) during 1986-1997 (2008)

Gavrilov, N. M., Fukao, S., Nakamura, T.

Averaged seasonal variations of wind perturbation intensities and vertical flux of horizontal momentum produced by internal gravity waves (IGWs) with periods 0.2-1 h and 1-6 h are studied at the...

Validation of HRDI MLT winds with meteor radars (2008)

Hasebe, F., Tsuda, T., Nakamura, T., Burrage, M. D.

A validation study of the mesospheric and lower-thermospheric (MLT) wind velocities measured by the High-Resolution Doppler Imager (HRDI) on board the Upper-Atmosphere Research Satellite (UARS) has...

An intercomparison between the GSWM, UARS, and ground based radar observations: a case-study in January 1993 (2008)

Palo, S. E., Hagan, M. E., Meek, C. E., Vincent, R. A., Burrage, M. D., Mclandress, C., ...

The Global-Scale Wave Model (GSWM) is a steady-state two-dimensional linearized model capable of simulating the solar tides and planetary waves. In an effort to understand the capabilities and...

Magnetic and electronic Co states in layered cobaltate GdBaCo2O5.5-x (2008)

Garcia-Fernandez, M., Scagnoli, V., Staub, U., Mulders, A. M., Janousch, M., Bodenthin, Y., ...

We have performed non-resonant x-ray diffraction, resonant soft and hard x-ray magnetic diffraction, soft x-ray absorption and x-ray magnetic circular dichroism measurements to clarify the electronic...

On the ionospheric perturbation associated with the 2007 Niigata Chuetsu-oki earthquake, as seen from subionospheric VLF/LF network observations (2008)

Hayakawa, M., Horie, T., Yoshida, M., Kasahara, Y., Muto, F., Ohta, K., ...

In order to investigate any precursory effect of ionospheric perturbations associated with the large 2007 Niigata Chuetsu-oki earthquake (16 July 2007) (magnitude, 6.8), we have made full use of our...

On the ionospheric perturbation associated with the 2007 Niigata Chuetsu-oki earthquake, as seen from subionospheric VLF/LF network observations (2008)

Hayakawa, M., Horie, T., Yoshida, M., Kasahara, Y., Muto, F., Ohta, K., ...

In order to investigate any precursory effect of ionospheric perturbations associated with the large 2007 Niigata Chuetsu-oki earthquake (16 July 2007) (magnitude, 6.8), we have made full use of our...

Dynamical CPA and Tight-Binding LMTO Approach to Correlated Electron System (2008)

Kakehashi, Y., Shimabukuro, T., Tamashiro, T, Nakamura, T.

Dynamical Coherent-Potential Approximation (CPA) to correlated electrons has been extended to a system with realistic Hamiltonian which consists of the first-principles tight-binding Linear Muffintin...

Attenuation curves in concrete of neutrons from 100-400 MeV per nucleon He, C, Ne, Ar, Fe and Xe ions on various targets (2008)

Agosteo, S, Nakamura, T, Silari, M, Zajacova, Z

Data on transmission of neutrons in concrete generated by heavy ions of intermediate energies (of typically up to 1 GeV per nucleon) are of interest for shielding design of accelerators for use in...

Attenuation curves in concrete of neutrons from 100-400 MeV per nucleon HE, C and NE ions (2008)

Agosteo, S, Nakamura, T, Silari, M

Data on transmission of neutrons in concrete generated by heavy ions of intermediate energies (of typically up to 1 GeV per nucleon) are of interest for shielding design of accelerators for use in...

Exotic Quark Structure of Lambda(1405) in QCD Sum Rule (2008)

Nakamura, T., Sugiyama, J., Ishii, N., Nishikawa, T., Oka, M.

A new analysis is performed in QCD sum rule for the lightest negative parity baryon Lambda (1405). Mixings of three-quark and five-quark Fock components are taken into account. Terms containing up to...

Chiral Symmetry of Nucleon Resonances in QCD sum rules (2008)

Nakamura, T., Gubler, P., Oka, M.

The QCD sum rule approach is employed in order to study chiral properties of positive- and negative-parity nucleon resonances. It is pointed out that nucleons with an ``exotic'' chiral property,...

Evaluation of critical current performance of 13 T-46 kA steel jacketed Nb3Al conductor (2008)

Koizumi, N., Azuma, K., Tsuchiya, Y., Matsui, K., Takahashi, Y., Nakajima, H., ...

A 13 T-46 kA Nb3Al conductor with steel jacket has been developed in the framework of ITER-EDA. The thermal strain will appear on the Nb3Al strands after heat treatment, when the steel jacket is used...

Unbound excited states in 19,17C (2007)

Satou, Y., Nakamura, T., Fukuda, N., Sugimoto, T., Kondo, Y., Matsui, N., ...

The neutron-rich carbon isotopes 19,17C have been investigated via proton inelastic scattering on a liquid hydrogen target at 70 MeV/nucleon. The invariant mass method in inverse kinematics was...

The electronic structure of La$_{1.48}$Nd$_{0.4}$Sr$_{0.12}$CuO$_4$ probed by high- and low-energy angle-resolved photoelectron spectroscopy: evolution with probing depth (2007)

Claesson, T., Mansson, M., Önsten, A., Shi, M., Pailhés, S., Chang, J., ...

We present angle-resolved photoelectron spectroscopy data probing the electronic structure of the Nd-substituted high-$T_c$ cuprate La$_{1.48}$Nd$_{0.4}$Sr$_{0.12}$CuO$_4$ (Nd-LSCO). Data have been...

Lifetime measurements of first excited states in 16,18C (2007)

Ong, H. J., Imai, N., Suzuki, D., Iwasaki, H., Sakurai, H., Onishi, T. K., ...

The electric quadrupole transition from the first 2+ state to the ground 0+ state in 18C was studied through lifetime measurement by an upgraded recoil shadow method applied to inelastically...

An Adaptive-Grain Thermal Simulation Method to Evaluate Effects of Spatio-Temporal Analysis Granularity upon The Thermal Behavior of VLSIs (2007)

Ito, M., Hesegawa, N., Egawa, R., Suzuki, Ken-Ichi, Nakamura, T.

Recent advanced procesors become more and more power-hungry and face adverse effects caused by the nonuniform thermal distribution generated by itself. The effects have not only an impact on the...

Temperature Gradient Alleviating Method for Arithmetic Units (2007)

Egawa, R., Ito, M., Hasegawa, N., Nakamura, T.

Recently, thermal-aware digital circuit design in advanced technologies is great challenges to realize high-speed and robust microprocessors. In this paper, we explore temperature gradient...

An Adaptive-Grain Thermal Simulation Method to Evaluate Effects of Spatio-Temporal Analysis Granularity upon The Thermal Behavior of VLSIs (2007)

Ito, M., Hesegawa, N., Egawa, R., Suzuki, Ken-Ichi, Nakamura, T.

Recent advanced procesors become more and more power-hungry and face adverse effects caused by the nonuniform thermal distribution generated by itself. The effects have not only an impact on the...

Temperature Gradient Alleviating Method for Arithmetic Units (2007)

Egawa, R., Ito, M., Hasegawa, N., Nakamura, T.

Recently, thermal-aware digital circuit design in advanced technologies is great challenges to realize high-speed and robust microprocessors. In this paper, we explore temperature gradient...

A Possible New Distance Indicator -Correlation between the duration and the X-ray luminosity of the shallow decay phase of Gamma Ray Bursts- (2007)

Sato, R., Ioka, K., Toma, K., Nakamura, T., Kataoka, J., Kawai, N., ...

We investigated the characteristics of the shallow decay phase in the early Xray afterglows of GRBs observed by Swift X-Ray Telescope (XRT) during the period of January 2005 to December 2006. We...

Measurement of the B(E2, $0^+_1 \rightarrow 2^+_1$) in the N = 16 nucleus $^{26}$Ne (2007)

Gibelin, J., Beaumel, D., Motobayashi, T., Aoi, N., Baba, H., Blumenfeld, Y., ...

Differential cross section of the inelastic scattering of a 54 MeV/u 26Ne beam on a lead target has been measured by detecting the de-excitation $\gamma$-rays. Analysis of the first 2+ state angular...

Measurement of the B(E2, $0^+_1 \rightarrow 2^+_1$) in the N = 16 nucleus $^{26}$Ne (2007)

Gibelin, J., Beaumel, D., Motobayashi, T., Aoi, N., Baba, H., Blumenfeld, Y., ...

Differential cross section of the inelastic scattering of a 54 MeV/u 26Ne beam on a lead target has been measured by detecting the de-excitation $\gamma$-rays. Analysis of the first 2+ state angular...

Measurement of the B(E2, $0^+_1 \rightarrow 2^+_1$) in the N = 16 nucleus $^{26}$Ne (2007)

Gibelin, J., Beaumel, D., Motobayashi, T., Aoi, N., Baba, H., Blumenfeld, Y., ...

Differential cross section of the inelastic scattering of a 54 MeV/u 26Ne beam on a lead target has been measured by detecting the de-excitation $\gamma$-rays. Analysis of the first 2+ state angular...

Inclusive cross section and double helicity asymmetry for \pi^0 production in p+p collisions at sqrt(s)=200 GeV: Implications for the polarized gluon distribution in the proton (2007)

Adare, A., Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Al-Bataineh, H., ...

The PHENIX experiment presents results from the RHIC 2005 run with polarized proton collisions at sqrt(s)=200 GeV, for inclusive \pi^0 production at mid-rapidity. Unpolarized cross section results...

Mixings of 4-quark components in light non-singlet scalar mesons in QCD sum rules (2007)

Sugiyama, J., Nakamura, T., Ishii, N., Nishikawa, T., Oka, M.

Mixings of 4-quark components in the non-singlet scalar mesons are studied in the QCD sum rules. We propose a formulation to evaluate the cross correlators of q\bar q and qq\bar q \bar q operators...

Energy Loss and Flow of Heavy Quarks in Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 GeV (2007)

Adare, A., Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Al-Bataineh, H., ...

The PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) has measured electrons from heavy flavor (charm and bottom) decays for 0.3 < p_T < 9 GeV/c at midrapidity (|y| < 0.35) in Au+Au...

Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV (2007)

Adler, S.S., Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Alexander, J., ...

Longitudinal density correlations of produced matter in Au+Au collisions at sqrt(s_NN)=200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity...

Enhancement of the dielectron continuum in $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions (2007)

Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Alexander, J., Al-Jamel, A., ...

The PHENIX experiment has measured the dielectron continuum in sqrt{s_NN} = 200 GeV Au+Au collisions. In minimum bias collisions the dielectron yield in the mass range between 150 and 750 MeV/c^2 is...

Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at $\sqrt{s_{NN}}$ = 200 GeV (2007)

Adare, A., Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Al-Bataineh, H., ...

Detailed differential measurements of the elliptic flow for particles produced in Au+Au and Cu+Cu collisions at sqrt(s_NN) = 200 GeV are presented. Predictions from perfect fluid hydrodynamics for...

Correlated Production of p and $\bar{p}$ in Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 GeV (2007)

Adare, A., Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Al-Bataineh, H., ...

Correlations between p and pbar's at transverse momenta typical of enhanced baryon production in Au+Au collisions are reported. The PHENIX experiment measures same and opposite sign baryon pairs in...

Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV: Jet-quenching and the response of partonic matter (2007)

Adare, A., Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Al-Bataineh, H., ...

Azimuthal angle \Delta\phi correlations are presented for charged hadrons from dijets for 0.4 < p_T < 10 GeV/c in Au+Au collisions at sqrt(s_NN) = 200 GeV. With increasing p_T, the away-side...

Evidence for a long-range component in the pion emission source in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV (2007)

Adler, S.S., Afanasiev, S., Aidala, C., N. Ajitanand, N., Akiba, Y., Alexander, J., ...

Emission source functions are extracted from correlation functions constructed from charged pions produced at mid-rapidity in Au+Au collisions at sqrt(s_NN)=200 GeV. The source parameters extracted...

Search for low lying dipole strength in the neutron rich nucleus $^{26}$Ne (2007)

Gibelin, J., Beaumel, D., Motobayashi, T., Aoi, N., Baba, H., Blumenfeld, Y., ...

Coulomb excitation of the exotic neutron-rich nucleus $^{26}$Ne on a $^{nat}$Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. Data...

Search for low lying dipole strength in the neutron rich nucleus $^{26}$Ne (2007)

Gibelin, J., Beaumel, D., Motobayashi, T., Aoi, N., Baba, H., Blumenfeld, Y., ...

Coulomb excitation of the exotic neutron-rich nucleus $^{26}$Ne on a $^{nat}$Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. Data...

Search for low lying dipole strength in the neutron rich nucleus $^{26}$Ne (2007)

Gibelin, J., Beaumel, D., Motobayashi, T., Aoi, N., Baba, H., Blumenfeld, Y., ...

Coulomb excitation of the exotic neutron-rich nucleus $^{26}$Ne on a $^{nat}$Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. Data...

Search for low lying dipole strength in the neutron rich nucleus $^{26}$Ne (2007)

Gibelin, J., Beaumel, D., Motobayashi, T., Aoi, N., Baba, H., Blumenfeld, Y., ...

Coulomb excitation of the exotic neutron-rich nucleus $^{26}$Ne on a $^{nat}$Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. Data...

High transverse momentum $\eta$ meson production in p+p, d+Au and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV (2007)

S. Adler, S., Afanasiev, S., Aidala, C., N. Ajitanand, N., Akiba, Y., Alexander, J., ...

Inclusive transverse momentum spectra of eta mesons in the range p_T~2-12 GeV/c have been measured at mid-rapidity (|\eta| < 0,35) by the PHENIX experiment at RHIC in p+p, d+Au and Au+Au collisions...

Elliptic flow for $\phi$ mesons and (anti)deuterons in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV (2007)

Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Alexander, J., Al-Jamel, A., ...

Differential elliptic flow (v_2) for phi mesons and (anti)deuterons (d^bar)d is measured for Au+Au collisions at sqrt(s_NN) = 200 GeV. The v_2 for phi mesons follows the trend of lighter pi^+/- and...

Measurements of total and partial charge-changing cross sections for 200-400 MeV/nucleon 12C in water and polycarbonate (2007)

Toshito, T., Kodama, K., Sihver, L., Yusa, K., Ozaki, M., Amako, K., ...

We have studied charged nuclear fragments produced by 200 - 400 MeV/nucleon carbon ions, interacting with water and polycarbonate, using a newly developed emulsion detector. Total and partial...

Projectile fragmentation reactions and production of nuclei near the neutron drip-line (2007)

Notani, M., Sakurai, H., Aoi, N., Iwasaki, H., Fukuda, N., Liu, Z., ...

The reaction mechanism of projectile fragmentation at intermediate energies has been investigated observing the target dependence of the production cross sections of very neutron-rich nuclei....