Results 241 to 250 of about 5,002 (274)
Some of the next articles are maybe not open access.
Some Measurements of Atmospheric Neutrons
Physical Review, 1958A series or airplane flights carrying neutron counters to an altitude of 700 g cm/sup -2/ was made at 52 20 north geomagnetic latitude in 1955. Enriched and normal BF/sub 3/ counters were covered with Cd, Sn, Pyrex, and limeglass shields. the ratios or the counting rates of the variously shielded counters are compared with the ratios calculated ...
openaire +1 more source
Attenuation of neutron monitor radiation in the atmosphere
Canadian Journal of Physics, 1968An NM-64 neutron monitor latitude survey made by road transport in the summer of 1965 in Canada, the United States, and Mexico was extended, in the summer of 1966, to the western seaboard of the United States and Hawaii. In 1966 in the vicinity of Mt. Hood (2.43 GV), Palomar Mt. (5.71 GV), and Mt.
H. Carmichael +4 more
openaire +1 more source
Structure in the fast spectra of atmospheric neutrons
Journal of Geophysical Research, 1969Fast neutron spectrum produced by galactic cosmic ray protons in atmosphere, presenting Monte Carlo transport calculation ...
John W. Wilson +2 more
openaire +1 more source
Concentration of Slow Neutrons in the Atmosphere
Nature, 1932RECENT evidence1, 2 of neutral particles of atomic mass and great penetrating power suggests the possibility that terrestial matter may contain similar particles of low (thermal) energies, undetected hitherto by reason of their small interaction with matter. While it has been argued that neutrons of mass 1 would rapidly escape from the earth, one would
openaire +1 more source
The URAN array for studying atmospheric neutrons
Bulletin of the Russian Academy of Sciences: Physics, 2017The URAN array is designed to study primary cosmic rays in the region of the knee by detecting neutrons produced as a result of interaction between EAS particles and nuclei in the atmosphere or matter near the installation. It consists of 72 detectors mounted on the roofs of experimental buildings and combined into cluster structures of 12 detectors ...
D. M. Gromushkin +11 more
openaire +1 more source
Neutrons Produced in the Atmosphere by the Cosmic Radiations
Physical Review, 1951The distribution of disintegration product neutrons in the atmosphere has been measured from the geomagnetic equator to 65\ifmmode^\circ\else\textdegree\fi{}N and up to \ensuremath{\sim}220 g-${\mathrm{cm}}^{\ensuremath{-}2}$ air. The measured exponential absorption of the neutron producing radiations in the equilibrium portion of the atmosphere is: $L(
openaire +1 more source
Altitude and latitude effects of atmospheric neutrons
Journal of Geophysical Research: Space Physics, 1986Ilford G5 emulsions were exposed at six altitudes from 4 to 40 mbar at λ = 7.8°N geomagnetic latitude (NGL). Atmospheric neutrons of 10–200 MeV are studied using three independent parameters. Spectra at 0 mbar were obtained by extrapolation. Energy spectra for neutrons were studied for seven different altitudes from 4 to 40 mbar. Spectra at 0 g/cm² for
openaire +1 more source
Neutron detection in the atmosphere
2012Nakon prvih mjerenja fotonske doze kozmičkog zračenja s poluvodičkim detektorima u zrakoplovima na visinama leta od 7 km i 10 km pristupa se pripremi pasivnih detektora nuklearnih tragova za detekciju neutrona u atmosferi. Korišteni su detektori nuklearnih tragova LR 115 i CR – 39 u kombinaciji s boronskom folijom kao neutronskim konverterom ; u ...
openaire
The density of cosmic-ray neutrons in the atmosphere
1963Neutrons are produced in the atmosphere by the interaction of cosmic-ray particles with the nuclei of nitrogen and oxygen. The density of these neutrons was determined experimentally by means of ionization chambers filled with B^(10), B^(11)F_3, and argon.
openaire +1 more source