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The Elastic Scattering of Protons from Li⁶ Nuclei


McCray, James Arthur (1962) The Elastic Scattering of Protons from Li⁶ Nuclei. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/2E98-TW57.


The differential elastic scattering cross section for protons from Li^6 nuclei has been measured for energies from 0.45 Mev to 2.9 Mev at six different angles. A measurement was also made of the Li^6(p,α)He^3 reaction cross section in order to determine its absolute value. The scattering data is consistent with an s- and p-wave phase shift analysis with a p-wave 5/2^- state at about E_p(Lab) = 1.84 Mev, with resonant parameters consistent with the parameters previously assigned to the corresponding mirror level in Li^7, and a very broad s-wave 1/2^+ state near or above E_p(Lab) = 2.76 Mev. The data is also consistent with a p-wave 3/2^- state with a different behavior of the s-wave scattering at higher energies, if an appropriate channel spin mixture is chosen. A p-wave 1/2^- state is not consistent with the data. No evidence for the existence of a 3/2^+ state near E_p(Lab) = 1 Mev with an appreciable Г_p/Г has been found. The stopping cross section for protons on lithium follows the Bloch formula from 0.8 Mev to 2.8 Mev.

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):
  • Barnes, Charles A.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1962
Record Number:CaltechTHESIS:08242011-160444604
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6620
Deposited By: Benjamin Perez
Deposited On:25 Aug 2011 14:39
Last Modified:21 Dec 2023 20:24

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