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CERN Document Server 17 のレコードが見つかりました。  1 - 10次  レコードへジャンプ: 検索にかかった時間: 1.20 秒 
1.
Influence of oxygen admixtures on the lifetime of metastable antiprotonic helium atoms / Pohl, R (Technische Universität München) ; Ishikawa, T (Univ. of Tokyo) ; Horváth, D (Research Institute for Particle and Nuclear Physics, Hungary) ; Sugai, I (Univ. of Tokyo) ; Torii, H A (Univ. of Tokyo) ; Hori, M (Univ. of Tokyo) ; Hayano, R S (Univ. of Tokyo) ; Hartmann, F J (Technische Universität München) ; Ketzer, B (Technische Universität München) ; Maierl, C (Technische Universität München) et al.
1998 - Published in : Phys. Rev. A 58 (1998) 4406-4415 APS Published version, local copy: PDF;
2.
Populations and lifetimes in the $v=n-l-1=2$ and 3 metastable cascades of $\overline{p} He^{+}$ measured by pulsed and continuous antiproton beams / Hori, Masaki (CERN) ; Eades, John ; Widmann, E ; Yamazaki, T ; Hayano, R S ; Ishikawa, T ; Torie, H A ; Von Egidy, T ; Hartmann, F ; Ketzer, B et al.
Using the laser spectroscopy, the time evolution of the state population in the v equivalent n-l=2 and 3 metastable cascades of antiprotonic helium atoms were studied. The effects of the collision between antiprotonic helium and the ordinary helium atoms on the atomic cascade were also analyzed. [...]
2004 - Published in : Phys. Rev. A 70 (2004) 012504-1-012504-16 APS Published version, local copy: PDF;
3.
Quenching Of Metastable States Of Anitprotonic Helium Atoms By Collisions With H(2) Molecules / Ketzer, B ; Hartmann, F J ; Von Egidy, T ; Maierl, C ; Pohl, R ; Eades, John ; Widmann, E ; Yamazaki, T ; Kumakura, M ; Morita, N et al.
KEK-97-195.
- 1997.
Fulltext
4.
Laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass / PS205 Collaboration
The antiprotonic helium atom-molecule (atomcule in short), pe/sup -/ He/sup 2+/=pHe/sup +/, first discovered at KEK and studied in detail at LEAR, is a unique metastable existence interfacing between matter and antimatter. Our recent high-resolution laser spectroscopy of pHe /sup +/ has reached a precision of 0.5 ppm, and the agreement between our experimental values of transition energies and the calculations has become better than 2 ppm. [...]
Geneva : CERN, 2000 - Published in : Nucl. Phys. A 663-664 (2000) 955-8
5.
Instrumentation For Laser-induced Annihilation Spectroscopy Of Metastable Anti-protonic Helium Atoms / Torii, H A ; Hayano, R S ; Maas, F E ; Morita, N ; Kumakura, M ; Yamazaki, T ; Masuda, H ; Sugai, I ; Ketzer, B ; Hartmann, F J et al.
Geneva : CERN, 1997 - Published in : Nucl. Instrum. Methods Phys. Res., A 396 (1997) 257-271
6.
Atomic spectroscopy and collisions using slow antiprotons / ASACUSA Collaboration
CERN-SPSC-2000-004 ; SPSC-M-642.
- 2000. - 38 p.
Fulltext - Fulltext - CERN library copies
7.
Laser Measurements of the Density Shifts of Resonance Lines in Antiprotonic Helium Atoms and Stringent Constraint on the Antiproton Charge and Mass / Torii, H A ; Hayano, R S ; Hori, Masaki ; Ishikawa, T ; Morita, N ; Kumakura, M ; Sugai, I ; Yamazaki, T ; Ketzer, B ; Hartmann, F J et al.
CERN-OPEN-99-237.- Geneva : CERN, 1998 - 9 p. - Published in : Phys. Rev. A 59 (1998) 223-229 APS Published version, local copy: PDF; Access to fulltext document: PDF;
8.
Laser spectroscopy of metastable states in the $\upsilon = 2$ cascade of antiprotonic $^{3}He$ / Hartmann, F ; Ketzer, B ; Maierl, C ; Pohl, R ; Von Egidy, T ; Hayano, R S ; Hori, Masaki (CERN) ; Ishikawa, T ; Tamura, H ; Torii, H A et al.
1998 - Published in : Phys. Rev. A 58 (1998) 3604 APS Published version, local copy: PDF;
9.
Quenching of metastable states of antiprotonic helium atoms by collisions with H$_2$ molecules / Ketzer, B ; Hartmann, F J ; Von Egidy, T ; Maierl, C ; Pohl, R ; Eades, John ; Widmann, E ; Yamazaki, T ; Kumakura, M ; Morita, N et al.
Laser resonance transitions between normally metastable states of antiprotonic helium atoms were induced making use of state dependent quenching effects caused by trace admixtures of \mbox{H$_2$}\ to the target helium gas. [...]
CERN-OPEN-98-006.
- 1998. - 11 p.
Access to fulltext document - Access to fulltext document - CERN library copies
10.
Hydrogen-assisted laser-induced resonant transitions between metastable states of antiprotonic helium atoms / PS205 Collaboration
Laser resonance transitions between normally metastable states of antiprotonic helium atoms were observed making use of state dependent quenching effects caused by small admixtures of \htwo\ molecules. By selectively shortening the lifetimes of states with higher principal quantum number $n$ as compared to those of lower $n$, this method for the first time provides access to all initially populated metastable states of \pbar\hep\ atoms. [...]
CERN-PPE-96-199.- Geneva : CERN, 1997 - 10 p. - Published in : Phys. Rev. Lett. 78 (1997) 1671-1674 APS Published version, local copy: PDF; Fulltext: PDF; - CERN library copies

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