A Caltech Library Service

19F(α,n)22Na, 22Ne(p,n)22Na, and the Role of their Inverses in the Destruction of 22Na


Wrean, Patricia Rose (1998) 19F(α,n)22Na, 22Ne(p,n)22Na, and the Role of their Inverses in the Destruction of 22Na. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/Z91Z42MK.


The inverses of the 19F(α,n)22Na and 22Ne(p,n)22Na reactions may be important destruction mechanisms for 22Na in neutron-rich, high-temperature or explosive nucleosynthesis. I have measured the cross sections for the 19F(α,n)22Na and 22Ne(p,n)22Na reactions from threshold to 3.1 and 5.4 MeV, respectively. The absolute efficiency of the 4π neutron detector was determined by Monte Carlo calculations and calibrated using two standard sources and two nuclear reactions. Cross sections for the inverse reactions have been calculated using the principle of detailed balance, and reaction rates for both the reactions and their inverses determined for temperatures between 0.01 and 10 GK for 19F(α,n)22Na and between 0.1 and 10 GK for 22Ne(p,n)22Na.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:neutron detector, nuclear astrophysics, Monte Carlo simulations
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Kavanagh, Ralph William
Thesis Committee:
  • Kavanagh, Ralph William (chair)
  • Barnes, Charles A.
  • Vogel, Petr
  • Porter, Frank C.
Defense Date:26 May 1998
Non-Caltech Author Email:wrean (AT)
Funding AgencyGrant Number
Record Number:CaltechTHESIS:03062018-140309587
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10757
Deposited By: Benjamin Perez
Deposited On:06 Mar 2018 23:14
Last Modified:04 Oct 2019 00:20

Thesis Files

PDF - Final Version
See Usage Policy.


Repository Staff Only: item control page