Abstract
The lunar eclipse at Udaipur (27◦ 43’ 12.00” N, 75◦ 28’ 48.01” E), India was experimentally observed on June16, 2011 using ground based NaI (Tl) Scintillation detector. We interpret such decrement of secondary gamma radiation flux (SGRF) on the basis of obstruction effect produced by Earth and Moon during lunar eclipse on radiation. Objective: To observe secondary gamma radiation flux during lunar eclipse day on comparison to pre and post eclipse days. Methods: For this experimental study we used ground based NaI (Tl) Scintillation detector. The data files were stored in computer for thirty minutes duration from 1.00 AM to 2.00 AM (Indian Time) on pre-eclipse normal days June 14 and 15, 2011 as well as on post eclipse normal day June 17 and also on eclipse day June 16, 2011. Finding: The analyzed data reveal significant decrement of secondary gamma radiation flux (SGRF) on lunar eclipse day about 6% on comparison to pre and post lunar eclipse days. Novelty: In this experimental study first time we reported about 6% decrement of secondary gamma radiation flux on lunar eclipse day on comparison to pre and post lunar eclipse days. Keywords: Lunar eclipse; cosmic radiation; reflected solar radiation; secondary gamma radiation; obstruction effect by Earth and Moon
Highlights
Charged particles cosmic radiation travels at nearly the speed of light and coming towards the Earth from all directions. Composition of such radiation is about 89% of these nuclei are protons, 10% of helium, and 1% of others heavier elements[1]. There is another class of radiation called solar radiation (SR) corresponded with energetic events on the sun
The cosmic radiation (CR) almost isotropically distributed and propagates through space while arriving on the Earth [2]. When both radiations reach towards the earth atmosphere and strikes with atoms of the upper atmosphere of the Earth there is production of “secondary” radiation
This secondary radiation has electromagnetic component which consist of gamma radiation, electrons
Summary
Charged particles cosmic radiation travels at nearly the speed of light and coming towards the Earth from all directions. Composition of such radiation is about 89% of these nuclei are protons, 10% of helium, and 1% of others heavier elements[1]. The cosmic radiation (CR) almost isotropically distributed and propagates through space while arriving on the Earth [2]. When both radiations reach towards the earth atmosphere and strikes with atoms of the upper atmosphere of the Earth there is production of “secondary” radiation. Produced secondary radiation can be detected using appropriate detector on ground [3,4]
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