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Title: Origin of a signal detected with the LSD detector after the accident at the chernobyl nuclear power plant

A rare signal was detected at 23:53 Moscow time on April 27, 1986 with the LSD low-background scintillation detector located under Mont Blanc at a distance of 1820 km from Chernobyl. To reveal the origin of this signal, we discuss the results obtained with other instruments operating within a similar program, as well as analyze the characteristics of the pulses of the signal and facts referring to the explosion of the Chernobyl reactor. A hypothesis based on detection with the LSD of gamma-quanta from {beta} decays of {sup 135}I nuclei ejected into atmosphere by the reactor explosion and carried in the underground detector camera with air of positive ventilation is considered. The explosion origin of the LSD signal indicates a new technogenic source of the background in the search for neutrino bursts from cores of collapsing stars.
Authors:
;  [1] ;  [2]
  1. Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)
  2. Istituto Nazionale di Fisica Nucleare, and Osservatorio Astrofisico di Torino, Istituto di Fisica dello Spazio Interplanetario (Italy)
Publication Date:
OSTI Identifier:
22210514
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 117; Journal Issue: 2; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ATMOSPHERES; BETA DECAY; CAMERAS; CHERNOBYLSK-4 REACTOR; DETECTION; EXPLOSIONS; IODINE 135; NEUTRINOS; NUCLEAR POWER PLANTS; RADIATION ACCIDENTS; SCINTILLATION COUNTERS; SIGNALS; UNDERGROUND