Takashi Ishikawa - My portal

Profile Information

Affiliation: Graduate School of Science, Department of Physics, The University of Tokyo

Degree: Doctor of Science(The University of Tokyo)

J-GLOBAL ID: 200901006532492862
researchmap Member ID: 1000013745

Research Interests

Research Areas

Natural sciences / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics /

Research History

1989 - 2004

The University of Tokyo
1989 - 2004

The University of Tokyo, Research Associate
1988 - 1989

西ドイツ重イオン研究所客員研究員
1988 - 1989

GSI(Laboratory for Heavy Ion Research)West Germany, Guest Researcher
1985 - 1988

The University of Tokyo
1985 - 1988

The University of Tokyo, Research Associate

Education

- 1985

The University of Tokyo
- 1985

The University of Tokyo

Misc.

Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium

J Sakaguchi, H Gilg, RS Hayano, T Ishikawa, K Suzuki, E Widmann, H Yamaguchi, F Caspers, J Eades, M Hori …

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 533(3) 598-611, Nov, 2004
Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium

J Sakaguchi, H Gilg, RS Hayano, T Ishikawa, K Suzuki, E Widmann, H Yamaguchi, F Caspers, J Eades, M Hori …

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 533(3) 598-611, Nov, 2004
Populations and lifetimes in the v=n-l-1=2 and 3 metastable cascades of (p)over-barHe(+) measured by pulsed and continuous antiproton beams

M Hori, J Eades, E Widmann, T Yamazaki, RS Hayano, T Ishikawa, HA Torii, T von Egidy, FJ Hartmann, B Ketzer …

PHYSICAL REVIEW A, 70(1), Jul, 2004
Systematic study of the decay rates of antiprotonic helium states

H Yamaguchi, RS Hayano, T Ishikawa, J Sakaguchi, E Widmann, J Eades, M Hori, HA Torii, B Juhasz, D Horvath …

PHYSICAL REVIEW A, 70(1), Jul, 2004
Populations and lifetimes in the v=n-l-1=2 and 3 metastable cascades of (p)over-barHe(+) measured by pulsed and continuous antiproton beams

M Hori, J Eades, E Widmann, T Yamazaki, RS Hayano, T Ishikawa, HA Torii, T von Egidy, FJ Hartmann, B Ketzer …

PHYSICAL REVIEW A, 70(1), Jul, 2004
Systematic study of the decay rates of antiprotonic helium states

H Yamaguchi, RS Hayano, T Ishikawa, J Sakaguchi, E Widmann, J Eades, M Hori, HA Torii, B Juhasz, D Horvath …

PHYSICAL REVIEW A, 70(1), Jul, 2004
Quantum tunnelling effects revealed in collisions of antiprotonic helium with hydrogenic molecules at low temperatures

B Juhasz, J Eades, RS Hayano, M Hori, D Horvath, T Ishikawa, HA Torii, E Widmann, H Yamaguchi, T Yamazaki

CHEMICAL PHYSICS LETTERS, 379(1-2) 91-98, Sep, 2003
Quantum tunnelling effects revealed in collisions of antiprotonic helium with hydrogenic molecules at low temperatures

B Juhasz, J Eades, RS Hayano, M Hori, D Horvath, T Ishikawa, HA Torii, E Widmann, H Yamaguchi, T Yamazaki

CHEMICAL PHYSICS LETTERS, 379(1-2) 91-98, Sep, 2003
Direct measurement of transition frequencies in isolated P He+ atoms, and new CPT-violation limits on the antiproton charge and mass

Physical Review Letters, 91, 123461, 2003
Direct measurement of transition frequencies in isolated P He⁺ atoms, and new CPT-violation limits on the antiproton charge and mass

Physical Review Letters, 91, 123461, 2003
Anomalies in the decay rates of antiprotonic helium-atom states

H Yamaguchi, T Ishikawa, J Sakaguchi, E Widmann, J Eades, RS Hayano, M Hori, HA Torii, B Juhasz, D Horvath …

PHYSICAL REVIEW A, 66(2), Aug, 2002
Anomalies in the decay rates of antiprotonic helium-atom states

H Yamaguchi, T Ishikawa, J Sakaguchi, E Widmann, J Eades, RS Hayano, M Hori, HA Torii, B Juhasz, D Horvath …

PHYSICAL REVIEW A, 66(2), Aug, 2002
Hyperfine Structure of Antiprotonic Helium Revealed by a laser-microwave-laser Resonance method

Phycical Review Letters, 89, 243402, 2002
Primary Populations of Metastable Antiprotonic ⁴He and ³He Atoms

Physical Review Letters, 89, 093401, 2002
Hyperfine Structure of Antiprotonic Helium Revealed by a laser-microwave-laser Resonance method

Physical Review Letters, 89, 243402, 2002
Primary populations of metastable antiprotonic ⁴He and ³He atoms

Physical Review Letters, 89, 093401, 2002
Sub-ppm laser spectroscopy of antiprotonic helium and a CPT-violation limit on the antiprotonic charge and mass

M Hori, J Eades, RS Hayano, T Ishikawa, J Sakaguchi, E Widmann, H Yamaguchi, HA Torii, B Juhasz, D Horvath …

PHYSICAL REVIEW LETTERS, 87(9), Aug, 2001
Sub-ppm laser spectroscopy of antiprotonic helium and a CPT-violation limit on the antiprotonic charge and mass

M Hori, J Eades, RS Hayano, T Ishikawa, J Sakaguchi, E Widmann, H Yamaguchi, HA Torii, B Juhasz, D Horvath …

PHYSICAL REVIEW LETTERS, 87(9), Aug, 2001
Collisional quenching of metastable states of antiprotonic helium by hydrogen and deuterium molecules(共著)

The European Physical Journal D, 13(3) 305, 2001
Laser measurement of the density shifts of resonance lines in antiprotonic helium atoms and stringent constraint on the antiproton charge and mass(共著)

Physical Review A, 59(1) 223-229, 1999

Professional Memberships

日本物理学会

Research Projects

K中間子ヘリウム原子のX線測定

2005
Measurement of Kaonic Helium X-ray

2005
反陽子ヘリウム原子のレーザー分光

1994
Laser Spectroscopy of Antiprotonic Helium Atoms

1994