A Gold-Silicon Surface-Barrier Proton Range Telescope

Takaki, Ryohei; Perkins, M. A.; Tuzzolino, A. J.

doi:10.1109/tns2.1961.4315801

IRE Trans. on Nuclear Science

1961

DOI: 10.1109/tns2.1961.4315801

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A Gold-Silicon Surface-Barrier Proton Range Telescope

Ryohei Takaki

M. A. Perkins

A. J. Tuzzolino

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1962

1969

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Cited by 6 publications

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“…Details of the telescope design have been published. 3 One telescope (V) was oriented in the vertical direction, with another telescope (H) in the horizontal direction as shown in Fig. 1 erer XXXI into a low-altitude (300 kilometer) polar orbit on 17 September 1961.…”

mentioning

confidence: 99%

Magnetospheric Cutoff for 1.5-MeV Extraterrestrial Protons

1964

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mentioning

confidence: 99%

Magnetospheric Cutoff for 1.5-MeV Extraterrestrial Protons

1964

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A cosmic-ray telescope employing detectors in the shape of a spherical segment

Perkins

Kristoff

Mason

et al. 1969

Nuclear Instruments and Methods

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Local time dependence of non-störmer cutoff for 1.5-Mev protons in quiet geomagnetic field

Stone¹

1964

J. Geophys. Res.

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Two solid‐state detector telescopes, vertically and horizontally oriented, were launched into a polar orbit during a time of low geomagnetic activity. A small flux of 1.5‐Mev protons, interacting with the geomagnetic field as individual particles, was observed at all latitudes above a characteristic cutoff latitude. The observed vertical cutoff was 65° (equivalent dipole latitude) on the night side and 67° on the day side, as compared with a theoretical Störmer cutoff of 76°. The local time dependence was also apparent in the cutoff transition width characterized by the difference in the latitude at which the flux is first detectable and the latitude at which the maximum (plateau) flux is first observed. On the night side, the transition width was about 1°; on the day side it was about 3° and variable. The horizontal cutoff latitudes were similar. Essentially identical results were obtained over north and south poles. These results are not adequately predicted by currently postulated cutoff theories and should be considered in the calculation of proton fluxes associated with polar‐cap absorption.

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A Gold-Silicon Surface-Barrier Proton Range Telescope

Cited by 6 publications

References 9 publications

Magnetospheric Cutoff for 1.5-MeV Extraterrestrial Protons

Magnetospheric Cutoff for 1.5-MeV Extraterrestrial Protons

A cosmic-ray telescope employing detectors in the shape of a spherical segment

Local time dependence of non-störmer cutoff for 1.5-Mev protons in quiet geomagnetic field

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