๐”– Bobbio Scriptorium
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A search for solar neutrons near solar maximum, II

โœ Scribed by Paolo Cortellessa; Paolo Benedetto; Constantinos Paizis

Publisher
Springer
Year
1971
Tongue
English
Weight
874 KB
Volume
20
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

A plastic scintillator counter with anticoincidence screen has flown in four balloon flights at a floating altitude variable between 4 and 5 rob, during night to day, day-time and night-time flights. The analysis and comparison of the day-time and night-time parts of the flights has given for the continuous emission flux an upper limit of 5.5 โ€ข 10 -a n/cm 2 s over the energy range from 10 MeV to 200 MeV. This upper limit is converted into upper limit differential solar neutron spectrum to be compared with the results obtained from other experiments.

An irregular excess in counting rate observed in one of the flights, resulting in a day-night difference, is discussed.

Finally the problems encountered in the operation of this type of detector at a high level of sensitivity are also discussed.

๐Ÿ“œ SIMILAR VOLUMES

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The upperlirnit on the solar neutron flux from 1-20 MeV has been measured, by a neutron detector on the OGO-6 satel!ite, to be less than 5 :-< 10 -z n cm -2 s -1 at the 95% confidence level for several flares including two flares of importance 3B and a solar proton event of importance 3B. The measur

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Near solar maximum, hard X-ray microflares with peak 20 keV fluxes of > 10-2 (cm 2 s keV)-1, more than ten times smaller than for typical flares and subflares, can occur at the rate of about once every five minutes. We report here on a search for hard X-ray microflares made on a long duration balloo