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  • 1
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    Measurement of the local density spectrum (1985)
    In:  CASI
    Details
    Publication Date: 2016-06-11
    Description: Since there is still disagreement among the results of various groups, a measurement of the local density spectrum with a close-packed array of four scintillators, each of area 0.14 sq cm was made. Data are taken with conventional electronics, supervised by an on-line microcomputer. The data are stored on audio cassettes and analyzed with the aid of another microcomputer. Since four independent samples for each shower are available, uncertainties inherent in results from many earlier experiments can be minimized.
    Keywords: SPACE RADIATION
    Type: 19th Intern. Cosmic Ray Conf - Vol. 7; p 60-63; NASA-CP-2376-VOL-7
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Observation of hard X-rays from the Crab pulsar and A0535+26 (1985)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The Crab pulsar PSR0531+21 was observed in a balloon flight from the Xianghe Balloon Station (China). Data were obtained in the range 20 to 200 keV with a poswish hard X-ray telescope which comprised a 150 sq cm primary crystal of 5 mm thick CsI(T1) which actively shielded the lower 2 pi steradians by a 5 cm thick NaI(T1) crystal. The scintillation pulses originating in CsI and NaI crystals are distinguished by pulse shape discrimination. The telescope has a field of view of approximately 4 deg H psi H pi determined by graded shield and collimator. The effective geometric area of the detector is 116 sq cm. It is noted that when folding a data flow on a long period interference from the data acquisition, transmission and recording system considerably affect the result.
    Keywords: SPACE RADIATION
    Type: OG-2.3-7 , 19th Intern. Cosmic Ray Conf - Vol. 1; p 149-150; NASA-CP-2376-VOL-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Measurement of muon intensity by Cerenkov method (1985)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Optical detection is an important technique in studies and observations of air showers, muons and relevant phenomena. The muon intensity is measured in a proper energy range and to study some problems about Cerenkov radiation of cosmic rays are studied, by a muon-telescope operated with Cerenkov detector. It is found that the measured muon intensity agrees with the integral energy spectrum of cosmic ray muons.
    Keywords: SPACE RADIATION
    Type: HE-5.2-15 , 19th Intern. Cosmic Ray Conf - Vol. 8; p 81-82; NASA-CP-2376-VOL-8
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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