K. Murakami

Publication List Details

Period

1982 - 2007

Number

193

Co-Authors

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...

Geant4 and its validation (2006)

Amako, K., Guatelli, S., Ivanchencko, V., Maire, M., Mascialino, B., Murakami, K., ...

Geant4 is an object-oriented toolkit for simulating the passage of particles through matter. At the very heart of Geant4 there is a wide set of complementary, and sometimes alternative, physics...

Geant4 and its validation (2006)

Amako, K., Guatelli, S., Ivanchencko, V., Maire, M., Mascialino, B., Murakami, K., ...

Geant4 is an object-oriented toolkit for simulating the passage of particles through matter. At the very heart of Geant4 there is a wide set of complementary, and sometimes alternative, physics...

Geant4 Developments and Applications (2006)

Allison, J., Amako, K., Apostolakis, J., Araujo, H., Dubois, P.A., Asai, M., ...

Geant4 is a software toolkit for the simulation of the passage of particles through matter. It is used by a large number of experiments and projects in a variety of application domains, including...

Recombinant human activated protein C improves pulmonary function in ovine acute lung injury resulting from smoke inhalation and sepsis (2006)

Maybauer, MO, Maybauer, DM, Fraser, JF, Traber, LD, Westphal, M, Enkhbaatar, P, ...

Objective: To investigate the effects of recombinant human activated protein C (rhAPC) on pulmonary function in acute lung injury (ALI) resulting from smoke inhalation in association with a bacterial...

Comparison of Geant4 electromagnetic physics models against the NIST reference data (2005)

Amako, K., Guatelli, S., Ivanchenko, V.N., Maire, M., Mascialino, B., Murakami, K., ...

The Geant4 Simulation Toolkit provides an ample set of physics models describing electromagnetic interactions of particles with matter. This paper presents the results of a series of comparisons for...

Comparison of Geant4 electromagnetic physics models against the NIST reference data (2005)

Amako, K., Guatelli, S., Ivanchenko, V.N., Maire, M., Mascialino, B., Murakami, K., ...

The Geant4 Simulation Toolkit provides an ample set of physics models describing electromagnetic interactions of particles with matter. This paper presents the results of a series of comparisons for...

Matrix Quantum Mechanics for Supermembrane on AdS_{7} x S^{4} (2004)

Murakami, K.

We explore the light-cone gauge formulation of a closed supermembrane on AdS_{7} x S^{4}. We obtain the action of matrix quantum mechanics with large N U(N) gauge symmetry for the light-cone...

Development of an Interface for Using EGS4 Physics Processes in Geant4 (2003)

Murakami, K., Amako, K., Hirayama, H., Namito, Y., Sasaki, T., Asai, M., ...

As simulation system, the variety of physics processes implemented is one of the most important functionalities. In that sense, Geant4 is one of the most powerful simulation toolkits. Its flexibility...

Solar Neutron Event in Association with a Large Solar Flare on November 24, 2000 (2003)

Watanabe, K., Muraki, Y., Matsubara, Y., Murakami, K., Sako, T., Tsuchiya, H., ...

Solar neutrons have been detected using the neutron monitor located at Mt. Chacaltaya, Bolivia, in association with a large solar flare on November 24, 2000. This is the first detection of solar...

GEANT4: A Simulation toolkit (2003)

Agostinelli, S, Allison, J, Amako, K, Apostolakis, John, Araújo, H M, Arce, P, ...

Geant4 is a toolkit for simulating the passage of particles through matter. It includes a complete range of functionality including tracking, geometry, physics models and hits. The physics processes...

Open Wilson Lines as States of Closed String (2002)

Murakami, K., Nakatsu, T.

System of a D-brane in bosonic string theory on a constant $B$ field background is studied in order to obtain further insight into the bulk-boundary duality. Boundary states which describe arbitrary...

Correspondence between Noncommutative Soliton and Open String/D-brane System via Gaussian Damping Factor (2000)

Chen, B., Itoyama, H., Matsuo, T., Murakami, K.

The gaussian damping factor (g.d.f.) and the new interaction vertex with the symplectic tensor are the characteristic properties of the N-point scalar-vector scattering amplitudes of the p-p' (p <...

Worldsheet and Spacetime Properties of p-p' System with B Field and Noncommutative Geometry (2000)

Chen, B., Itoyama, H., Matsuo, T., Murakami, K.

We study worldsheet and spacetime properties of the p-p' (p < p') open string system with constant B_{ij} field viewed from the Dp' brane. The description of this system in terms of the CFT with spin...

p-p' System with B-field, Branes at Angles and Noncommutative Geometry (1999)

Chen, B., Itoyama, H., Matsuo, T., Murakami, K.

We study the generic $p-p^\prime$ system in the presence of constant NS 2-form $B_{ij}$ field. We derive properties concerning with the noncommutativity of D-brane worldvolume, the Green functions...

Experimental search for the decay mode K_L -> pi^0 gamma e^+ e^- (1999)

Murakami, K., Hemmi, Y., Kurashige, H., Matono, Y., Nomura, T., Sakamoto, H., ...

We report on results of a search for the decay mode K_L -> pi^0 gamma e^+ e^- conducted by the E162 experiment at KEK. We observed no events and set a 90% confidence level upper limit of Br(K_L ->...

The Anisotropy of Cosmic Ray Arrival Direction around 10^18eV (1999)

Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., Kakizawa, S., ...

Anisotropy in the arrival directions of cosmic rays around 10^{18}eV is studied using data from the Akeno 20 km^2 array and the Akeno Giant Air Shower Array (AGASA), using a total of about 216,000...

Small-scale anisotropy of cosmic rays above 10^19eV observed with the Akeno Giant Air Shower Array (1999)

Takeda, M., Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., ...

With the Akeno Giant Air Shower Array (AGASA), 581 cosmic rays above 10^19eV, 47 above 4 x 10^19eV, and 7 above 10^20eV are observed until August 1998. Arrival direction distribution of these...

A handy method to monitor outputs from a pulsed light source and its application to photomultiplier's rate effect studies (1998)

Takeuchi, Y., Hemmi, Y., Kurashige, H., Matono, Y., Murakami, K., Nomura, T., ...

In order to study photomultiplier's short-term gain stability at high counting rate, we constructed an LED pulsed light source and its output monitor system. For the monitor system, we employed a...

Observation of the decay mode K_L -> pi^+ pi^- e^+ e^- (1998)

Takeuchi, Y., Hemmi, Y., Kurashige, H., Matono, Y., Murakami, K., Nomura, T., ...

We report on results of an experimental search for the K_L -> pi^+ pi^- e^+ e^- decay mode. We found 13.5 +- 4.0 events and determined its branching ratio to be (4.4 +- 1.3(stat) +-...

Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff (1998)

Takeda, M., Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., ...

The cosmic-ray energy spectrum above 10^{18.5} eV is reported using the updated data set of the Akeno Giant Air Shower Array (AGASA) from February 1990 to October 1997. The energy spectrum extends...

The Anisotropy of Cosmic Ray Arrival Directions around 10$^{18}$eV (1998)

Hayashida, AGASA Collaboration: N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., Kamata, K., ...

Anisotropy in the arrival directions of cosmic rays with energies above 10$^{17}$eV is studied using data from the Akeno 20 km$^2$ array and the Akeno Giant Air Shower Array (AGASA), using a total of...

Matrix Model for Dirichlet Open String (1998)

Ezawa, K., Matsuo, Y., Murakami, K.

We discuss the open string ending on D $p$-branes in IKKT framework. First we determine the boundary conditions of Green-Schwarz superstring which are consistent with supersymmetry and...

Matrix Regularization of an Open Supermembrane ---towards M-theory five-branes via open supermembranes --- (1997)

Ezawa, K., Matsuo, Y., Murakami, K.

We study open supermembranes in 11 dimensional rigid superspace with 6 dimensional topological defects (M-theory five-branes). After rederiving in the Green-Schwarz formalism the boundary conditions...

BPS Configuration of Supermembrane With Winding in M-direction (1997)

Ezawa, K., Matsuo, Y., Murakami, K.

We study de Wit-Hoppe-Nicolai supermembrane with emphasis on the winding in M-direction. We propose a SUSY algebra of the supermembrane in the Lorentz invariant form. We analyze the BPS conditions...

Upstream interactions at the lambda pRM promoter are sequence nonspecific and activate the promoter to a lesser extent than an introduced UP element of an rRNA promoter. (1996)

Tang, Y, Murakami, K, Ishihama, A, DeHaseth, P L

The rightward regulatory region of bacteriophage lambda contains two promoters, pRM and pR, which direct the synthesis of nonoverlapping divergent transcripts from start sites 82 bp apart. Each of...

The Cosmic Ray Energy Spectrum above (1995)

S. Yoshida, S. Imaizumi, N. Inoue, K. Kadota, F. Kakimoto, K. Kamata, ...

We report a first result on the cosmic ray energy spectrum above 3 Theta 10 18 eV measured by the Akeno Giant Air Shower Array (AGASA) from July 1990 to February 1994. The analysis method and the...

Observation of a Very Energetic Cosmic Ray well beyond the Predicted 2.7K Cutoff in the Primary Energy Spectrum (1995)

N. Hayashida, S. Imaizumi, N. Inoue, K. Kadota, F. Kakimoto, K. Kamata, ...

A very energetic cosmic ray of energy about (1.7¸2.6)Theta10 20 eV was observed by the Akeno Giant Air Shower Array (AGASA) on December 3, 1993 from the direction of galactic longitude l=131 ffi and...

CHARACTERISTICS OF AMORPHOUS MAGNETIC FIBERS OF 10 µm IN DIAMETER AND MINIATURIZED CLOTH TRANSFORMER (1988)

Matsuki, H., Miyazawa, H., Yamaguchi, M., Watanabe, T., Murakami, K., Yamamoto, T.

Amorphous magnetic fiber of 10 µm in diameter was developed, which shows high value and desirable frequency characteristic of the permeability. The cloth transformer of thickness less than 1 mm...

CHARACTERISTICS OF AMORPHOUS MAGNETIC FIBERS OF 10 µm IN DIAMETER AND MINIATURIZED CLOTH TRANSFORMER (1988)

Matsuki, H., Miyazawa, H., Yamaguchi, M., Watanabe, T., Murakami, K., Yamamoto, T.

Amorphous magnetic fiber of 10 µm in diameter was developed, which shows high value and desirable frequency characteristic of the permeability. The cloth transformer of thickness less than 1 mm...

CHARACTERISTICS OF AMORPHOUS MAGNETIC FIBERS OF 10 µm IN DIAMETER AND MINIATURIZED CLOTH TRANSFORMER (1988)

Matsuki, H., Miyazawa, H., Yamaguchi, M., Watanabe, T., Murakami, K., Yamamoto, T.

Amorphous magnetic fiber of 10 µm in diameter was developed, which shows high value and desirable frequency characteristic of the permeability. The cloth transformer of thickness less than 1 mm...

TIME RESOLVED X-RAY ABSORPTION MEASUREMENTS ON PULSED LASER IRRADIATED THIN SILICON FOILS AND SILICON PLASMAS (1986)

Van Brug, H., Bijkerk, F., Gerritsen, H., Murakami, K., Van Der Wiel, M.J.

We present time resolved x-ray absorption measurements (90-300eV) on amorphous silicon foils, that are pulsed laser irradiated. These results are compared with absorption measurements on silicon...

TIME RESOLVED X-RAY ABSORPTION MEASUREMENTS ON PULSED LASER IRRADIATED THIN SILICON FOILS AND SILICON PLASMAS (1986)

Van Brug, H., Bijkerk, F., Gerritsen, H., Murakami, K., Van Der Wiel, M.J.

We present time resolved x-ray absorption measurements (90-300eV) on amorphous silicon foils, that are pulsed laser irradiated. These results are compared with absorption measurements on silicon...

TIME RESOLVED X-RAY ABSORPTION MEASUREMENTS ON PULSED LASER IRRADIATED THIN SILICON FOILS AND SILICON PLASMAS (1986)

Van Brug, H., Bijkerk, F., Gerritsen, H., Murakami, K., Van Der Wiel, M.J.

We present time resolved x-ray absorption measurements (90-300eV) on amorphous silicon foils, that are pulsed laser irradiated. These results are compared with absorption measurements on silicon...

STABILITY OF THE SHAPE MEMORY EFFECT - EFFECT OF GRAIN SIZE REFINEMENT (1982)

Ikai, Y., Murakami, K., Mishima, K.

Resistivity to thermal degradation in repeated martensitic transformation is evaluated through optical reflectivity measurements. Any thermal ageing treatment before thermal loading does not improve...