Measurement of cosmic ray positron and negatron spectra between 50 and 800 MeV
A magnetic spectrometer employing digital-readout spark chambers and a gas Cerenkov threshold counter was used to measure the spectra of cosmic ray negatrons and positrons over the range from 50 to 800 MeV during two balloon flights from Ft. Churchill, Manitoba, in July 1972. A preliminary analysis...
| Main Authors: | , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
1974
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| Online Access: | http://ntrs.nasa.gov/search.jsp?R=19740047424 |
| _version_ | 1821492070629507072 |
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| author | Daugherty, J. K. Hartman, R. C. Schmidt, P. J. |
| author_facet | Daugherty, J. K. Hartman, R. C. Schmidt, P. J. |
| author_sort | Daugherty, J. K. |
| collection | NASA Technical Reports Server (NTRS) |
| description | A magnetic spectrometer employing digital-readout spark chambers and a gas Cerenkov threshold counter was used to measure the spectra of cosmic ray negatrons and positrons over the range from 50 to 800 MeV during two balloon flights from Ft. Churchill, Manitoba, in July 1972. A preliminary analysis of data from the first flight suggests that the total electron spectrum in this range has not fully recovered to its condition at solar minimum observed in 1965. The preliminary results also provide upper limits for the positive fraction over the range from 200 to 800 MeV which are consistent with the values found in earlier measurements. |
| format | Other/Unknown Material |
| genre | Churchill |
| genre_facet | Churchill |
| id | ftnasantrs:oai:casi.ntrs.nasa.gov:19740047424 |
| institution | Open Polar |
| language | unknown |
| op_collection_id | ftnasantrs |
| op_coverage | Unclassified, Unlimited, Publicly available |
| op_relation | http://ntrs.nasa.gov/search.jsp?R=19740047424 Accession ID: 74A30174 |
| op_rights | Copyright |
| op_source | Other Sources |
| publishDate | 1974 |
| record_format | openpolar |
| spelling | ftnasantrs:oai:casi.ntrs.nasa.gov:19740047424 2025-01-16T21:30:51+00:00 Measurement of cosmic ray positron and negatron spectra between 50 and 800 MeV Daugherty, J. K. Hartman, R. C. Schmidt, P. J. Unclassified, Unlimited, Publicly available JAN 1, 1974 http://ntrs.nasa.gov/search.jsp?R=19740047424 unknown http://ntrs.nasa.gov/search.jsp?R=19740047424 Accession ID: 74A30174 Copyright Other Sources 29 International Cosmic Ray Conference; August 17-30, 1973; Denver, CO 1974 ftnasantrs 2012-02-15T11:52:21Z A magnetic spectrometer employing digital-readout spark chambers and a gas Cerenkov threshold counter was used to measure the spectra of cosmic ray negatrons and positrons over the range from 50 to 800 MeV during two balloon flights from Ft. Churchill, Manitoba, in July 1972. A preliminary analysis of data from the first flight suggests that the total electron spectrum in this range has not fully recovered to its condition at solar minimum observed in 1965. The preliminary results also provide upper limits for the positive fraction over the range from 200 to 800 MeV which are consistent with the values found in earlier measurements. Other/Unknown Material Churchill NASA Technical Reports Server (NTRS) |
| spellingShingle | 29 Daugherty, J. K. Hartman, R. C. Schmidt, P. J. Measurement of cosmic ray positron and negatron spectra between 50 and 800 MeV |
| title | Measurement of cosmic ray positron and negatron spectra between 50 and 800 MeV |
| title_full | Measurement of cosmic ray positron and negatron spectra between 50 and 800 MeV |
| title_fullStr | Measurement of cosmic ray positron and negatron spectra between 50 and 800 MeV |
| title_full_unstemmed | Measurement of cosmic ray positron and negatron spectra between 50 and 800 MeV |
| title_short | Measurement of cosmic ray positron and negatron spectra between 50 and 800 MeV |
| title_sort | measurement of cosmic ray positron and negatron spectra between 50 and 800 mev |
| topic | 29 |
| topic_facet | 29 |
| url | http://ntrs.nasa.gov/search.jsp?R=19740047424 |