Atmospheric gamma-ray spectrum between 10 and 100 MeV
An experiment made with a baloon-borne large volume (16×16×24 cm3) omnidirectional plastic scintillator sensitive to high-energy γ-radiation is described. Two flights were carried out on 25 November, 1973 and 24 February, 1978 at high geomagnetic cut-off rigidities. For an omnidirectional detector a...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0004640X_v190_n2_p317_Azcarate |
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todo:paper_0004640X_v190_n2_p317_Azcarate2023-10-03T14:02:47Z Atmospheric gamma-ray spectrum between 10 and 100 MeV Azcárate, I.N. Ghielmetti, H.S. Mugherli, V.J. An experiment made with a baloon-borne large volume (16×16×24 cm3) omnidirectional plastic scintillator sensitive to high-energy γ-radiation is described. Two flights were carried out on 25 November, 1973 and 24 February, 1978 at high geomagnetic cut-off rigidities. For an omnidirectional detector and for energies greater than several MeV, most of the detected photons are secondary γ-rays produced through interactions of the charged cosmic rays with the atmosphere. To unfold the observed pulse height spectrum and obtain the incident γ-ray spectrum, the detector response function is calculated numerically. By using this response function a differential flux d J/d E=(0.33±0.1)E-1.2±0.2 photons cm-2 s-1 MeV-1 averaged over all zenith angles, is estimated for the atmospheric γ-radiation, at 5 g cm-2, in the 10-100 MeV energy range. This result is compared with other observations made with different types of detectors and at different geomagnetic latitudes. © 1992 Kluwer Academic Publishers. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004640X_v190_n2_p317_Azcarate |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
An experiment made with a baloon-borne large volume (16×16×24 cm3) omnidirectional plastic scintillator sensitive to high-energy γ-radiation is described. Two flights were carried out on 25 November, 1973 and 24 February, 1978 at high geomagnetic cut-off rigidities. For an omnidirectional detector and for energies greater than several MeV, most of the detected photons are secondary γ-rays produced through interactions of the charged cosmic rays with the atmosphere. To unfold the observed pulse height spectrum and obtain the incident γ-ray spectrum, the detector response function is calculated numerically. By using this response function a differential flux d J/d E=(0.33±0.1)E-1.2±0.2 photons cm-2 s-1 MeV-1 averaged over all zenith angles, is estimated for the atmospheric γ-radiation, at 5 g cm-2, in the 10-100 MeV energy range. This result is compared with other observations made with different types of detectors and at different geomagnetic latitudes. © 1992 Kluwer Academic Publishers. |
| format |
JOUR |
| author |
Azcárate, I.N. Ghielmetti, H.S. Mugherli, V.J. |
| spellingShingle |
Azcárate, I.N. Ghielmetti, H.S. Mugherli, V.J. Atmospheric gamma-ray spectrum between 10 and 100 MeV |
| author_facet |
Azcárate, I.N. Ghielmetti, H.S. Mugherli, V.J. |
| author_sort |
Azcárate, I.N. |
| title |
Atmospheric gamma-ray spectrum between 10 and 100 MeV |
| title_short |
Atmospheric gamma-ray spectrum between 10 and 100 MeV |
| title_full |
Atmospheric gamma-ray spectrum between 10 and 100 MeV |
| title_fullStr |
Atmospheric gamma-ray spectrum between 10 and 100 MeV |
| title_full_unstemmed |
Atmospheric gamma-ray spectrum between 10 and 100 MeV |
| title_sort |
atmospheric gamma-ray spectrum between 10 and 100 mev |
| url |
http://hdl.handle.net/20.500.12110/paper_0004640X_v190_n2_p317_Azcarate |
| work_keys_str_mv |
AT azcaratein atmosphericgammarayspectrumbetween10and100mev AT ghielmettihs atmosphericgammarayspectrumbetween10and100mev AT mugherlivj atmosphericgammarayspectrumbetween10and100mev |
| _version_ |
1807323633284022272 |