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Title: On nonthermal processes in the core of the Sun

Nonthermal nuclear processes in the core of the Sun that are induced by fast particles appearing as nonthermalized products of exothermic reactions are discussed. Among other things, properties of 8.7-MeV alpha particles originating from the reaction p + {sup 7}Li → 2α are studied, and their effect on the balance of the processes p + {sup 17}O ai α + {sup 14}N, which close the CNO-II cycle, is determined. It is shown that the effective temperature of fast alpha particles is approximately 1000 times as high as the temperature of the plasma in the Sun’s core and that, under some specific conditions, the rate of the reverse reaction α + {sup 14}N → p + {sup 17}O may be one to two orders of magnitude higher than the rate of the forward reaction p + {sup 17}O → α + {sup 14}N.
Authors:
 [1]
  1. Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation)
Publication Date:
OSTI Identifier:
22472282
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 78; Journal Issue: 4; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA PARTICLES; CNO CYCLE; LITHIUM 7; LITHIUM 7 TARGET; MEV RANGE; NITROGEN 14; OXYGEN 17; PLASMA; PROTON REACTIONS; SUN