نتایج جستجو برای: gamma ray spectrometer
تعداد نتایج: 424287 فیلتر نتایج به سال:
A reanalysis of NEAR X-ray/gamma-ray spectrometer (XGRS) data provides robust evidence that the elemental composition of the near-Earth asteroid 433 Eros is consistent with the L and LL ordinary chondrites. These results facilitated the use of the gamma-ray measurements to produce the first in situ measurement of hydrogen concentrations on an asteroid. The measured value, 1100-700+1600 ppm, is ...
The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) is dedicated to the ne spec-troscopy ((E: 2 keV FWHM @ 1 MeV) and ne imaging (angular resolution: 12 0 FWHM) of celestial gamma-ray sources in the energy range 15 keV to 10 MeV. The scientiic payload consists of two gamma-ray instruments and two monitors: the Ge spectrometer (SPI) and the CdTe/CsI imager (IBIS); the X-ray monitor (J...
We have searched over 9 years of data from the Solar Maximum Mission (SMM) Gamma Ray Spectrometer for gamma-ray bursts (GRBs) with abnormally hard spectra which may have been missed in previous searches in the 0.35{0.8 MeV energy band. For this purpose, we searched the higher 0.8{10 MeV band. We have found only two new GRBs in this search, compared with 177 GRBs found in the 0.35{0.8 MeV band. ...
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