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Neutrino Processes of Significance in Stars


Levine, Michael Jerry (1963) Neutrino Processes of Significance in Stars. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/PCA1-2K46.


The transition probabilities and rates of dissipation of energy by the neutrino-antineutrino pairs are calculated for the processes: e^(-)+e^(+)→v+^(-/)v and e^(±)+y→e^(±) + v+^(-/)v, in the limit of a nondegenerate electron gas. These quantities are also calculated for the process y+y→v +^(-/v) using a nonlocal weak interaction; the resulting matrix elements are reduced by a symbol manipulation computer program. The energy dissipation rates for these processes, the urca process, and the pr ocesses e^(±)+(z,A)→e^(±)+(z,A)+v+^(-/)v and y+(z,A)→(z,A)+v+^(-/)v are compared. The process e^(+)+e^(-)→v+^(-/)v or e^(±)+y→e^(±)+v+^(-/)v is found to dominate in the range of temperatures and densities considered: 10^(8) °K ≤ T ≤5 x 10^(9)°K, 1gm/cm^(3) ≤ p ≤10^(6)gm/cm^(3).

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:(Physics)
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Gell-Mann, Murray
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1963
Record Number:CaltechTHESIS:01022013-143533677
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7363
Deposited By: Dan Anguka
Deposited On:02 Jan 2013 23:18
Last Modified:08 Jan 2024 20:01

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