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6 papers · 1 filter
Thin Ice Target for O(p,p') experiment
T. Kawabata, H. Akimune, H. Fujimura +26
A windowless and self-supporting ice target is described. An ice sheet with a thickness of 29.7 mg/cm cooled by liquid nitrogen was placed at the target position of a magnetic…
Primary proton spectrum between 200 TeV and 1000 TeV observed with the Tibet burst detector and air shower array
M. Amenomori, S. Ayabe, Caidong
Since 1996, a hybrid experiment consisting of the emulsion chamber and burst detector array and the Tibet-II air-shower array has been operated at Yangbajing (4300 m above sea leve…
A study of the shadowing of galactic cosmic rays by the sun in a quiet phase of solar activity with the Tibet air shower array
M. Amenomori, S. Ayabe, Caidong
We have shown that the Sun's shadow by high energy cosmic rays moves year by year and its behavior is correlated with a time variation of the large-scale structure of the solar and…
Measurement of air shower cores to study the cosmic ray composition in the knee energy region
M. Amenomori, S. Ayabe, Caidong
Since 1996, a hybrid experiment consisting of an emulsion chamber and a burst detector array and the Tibet-II air shower array has been operated at Yangbajing (4300 m above sea lev…
Gamow-Teller Strengths of the Inverse-Beta Transition 176Yb --> 176Lu for Spectroscopy of Proton-Proton and other sub-MeV Solar Neutrinos
M. Fujiwara, H. Akimune, A. M. van den Berg +18
Discrete Gamow-Teller (GT) transitions, 176Yb-->176Lu at low excitation energies have been measured via the (3He,t) reaction at 450 MeV and at 0 degrees. For 176Yb, two low-lying s…
Detection of Multi-TeV Gamma Rays from Markarian 501 during an Unforeseen Flaring State in 1997 with the Tibet Air Shower Array
M. Amenomori
In 1997, the BL Lac Object Mrk 501 entered a very active phase and was the brightest source in the sky at TeV energies, showing strong and frequent flaring. Using the data obtained…