Zobrazeno 1 - 10
of 99
pro vyhledávání: '"M. Irako"'
Autor:
Kukuraitytė, Rita
Kiekviena politinės lyderystės apraiška 1990 – 1991 metais vykusio Irako – Kuveito konflikto kontekste buvo skirtinga priklausomai nuo JAV, Didžiosios Britanijos, Prancūzijos ir Irako politinių lyderių asmeninių savybių, lyderiavimo moty
Externí odkaz:
http://vddb.library.lt/fedora/get/LT-eLABa-0001:E.02~2007~D_20090908_194031-33211/DS.005.0.01.ETD
Autor:
Kukuraitytė, Rita
Every political clash leaves a trace in World history. The conflict between Iraq and Kuwait in the end of XX century is not the exception. Amid growing tension between the two Persian Gulf neighbors, Saddam Hussein concluded that the United States an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::97def9dc90e0e356f0209dfc8dbdc310
https://repository.vu.lt/VU:ELABAETD1931009&prefLang=en_US
https://repository.vu.lt/VU:ELABAETD1931009&prefLang=en_US
Autor:
T. Kumita, M. Irako, K Wada, H. Iijima, Tachishige Hirose, Masakazu Washio, K. Kadoya, T. Asonuma, B. Matsumoto
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 483:641-648
On the basis of velocity modulation, we have developed a positron-beam buncher for the measurement of ortho-positronium lifetime τ o−Ps and TOF. Since high permeability cores were used, the buncher was constructed compactly and was used to efficie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b47d270c198a720749c93b8e62595721
https://doi.org/10.1016/s0168-9002(01)01948-9
https://doi.org/10.1016/s0168-9002(01)01948-9
Autor:
K. Kadoya, Hiroyuki Yabu, Keiji Wada, Tachishige Hirose, N.N. Mondal, T. Kumita, Katsuyuki Kobayashi, Masatoshi Kajita, M. Irako, B. Matsumoto
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 192:171-175
We have been theoretically and experimentally studying details of laser cooling of ortho-positronium. Experimental apparatus consists of a pulsed positron beam generator, a long pulse wide bandwidth ultraviolet laser and a time-of-flight system to me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb26bbbef222af8eac36fbd3e125ba74
https://doi.org/10.1016/s0168-583x(02)00863-7
https://doi.org/10.1016/s0168-583x(02)00863-7
Autor:
Hiroyuki Yabu, Tachishige Hirose, M. Irako, Masatoshi Kajita, H. Iijima, Kazuyuki Wada, T. Kumita
Publikováno v:
Journal of the Physical Society of Japan. 70:3255-3260
On the basis of three dimensional (3-D) Monte Carlo simulation, we studied details of laser cooling (Doppler cooling) of ortho-Positronium ( o -Ps) which would be applied to the achievement of Bose...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3deec8a09a5eed48fa9edae8098f5900
https://doi.org/10.1143/jpsj.70.3255
https://doi.org/10.1143/jpsj.70.3255
Autor:
R. Hamatsu, M. Irako, N. Kawasaki, Tachishige Hirose, Masataka Hirose, T. Kumita, Masami Chiba, Jinfeng Yang
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 440:172-180
A polarimeter which utilizes ortho-positronium quenching in a magnetic field is used to measure polarization of slow positron beams. This polarimeter is employed for a polarization measurement at an e+ beam system where the beam is provided from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b36e9dda1b4dee69767880aa3d473bd2
https://doi.org/10.1016/s0168-9002(99)00896-7
https://doi.org/10.1016/s0168-9002(99)00896-7
Autor:
Masatoshi Kajita, N.N. Mondal, Jun'ichi Kaneko, M. Irako, H. Iijima, Tachishige Hirose, T. Kumita, Katsuyuki Kobayashi, Okada Yasuhiro, Yoshiyuki Igura
Publikováno v:
Applied Surface Science. 149:106-109
A cloud of ortho-positronium produced at the room temperature can be cooled down to 0.6 K utilizing a long pulse (180 ns) laser with 243 nm wavelength. We developed a time bunching system of a slow positron beam to synchronize production of positroni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::045494abe48f32c781578910dcece8c5
https://doi.org/10.1016/s0169-4332(99)00182-8
https://doi.org/10.1016/s0169-4332(99)00182-8
Autor:
M. Irako, Takuro Nishimura, Kiyohiko Naka, Ryosuke Ogata, Masami Chiba, Tachishige Hirose, T. Kumita, Shinya Matsuo, R. Hamatsu
Publikováno v:
Applied Surface Science. 149:276-281
Positronium (Ps) is a bound state of an electron and a positron, which annihilates into photons. It is a suitable place to study the quantum electrodynamics (QED) since strong and weak interactions are negligibly small in the annihilation processes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c11ede6fd2c101a213e58cf33ab26a8
https://doi.org/10.1016/s0169-4332(99)00215-9
https://doi.org/10.1016/s0169-4332(99)00215-9
Autor:
H. Iijima, M. Irako, T. Kumita, Tsunehiko Omori, N.N. Mondal, Y Igura, Tachishige Hirose, R. Hamatsu
Publikováno v:
Applied Surface Science. 149:269-275
To investigates the low energy positronium (Ps) production in terms of target temperatures and materials, surface condition and so on, we adopt the time-of-flight (TOF) method and perform extensive Monte Carlo simulation to design an apparatus. Under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd77e76511e9810285223666ae665ca2
https://doi.org/10.1016/s0169-4332(99)00214-7
https://doi.org/10.1016/s0169-4332(99)00214-7
Autor:
Masataka Hirose, K Matsuzawa, Tachishige Hirose, R. Hamatsu, N.N. Mondal, H. Iijima, T. Kumita, M. Irako
Publikováno v:
Applied Surface Science. 149:16-19
We have constructed a bunched beam generator of polarized slow positrons, namely TOPPS-II (Tokyo Metropolitan University Polarized Positron Beam System) using the magnetic transportation. The positrons emitted from 100 mCi 22 Na are implanted on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99810ea47e0eff35478e6a74ab719328
https://doi.org/10.1016/s0169-4332(99)00183-x
https://doi.org/10.1016/s0169-4332(99)00183-x