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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Radiative muon capture on nuclear targets

Serna, Alvaro 20 September 2005 (has links)
A large acceptance pair spectrometer to detect photons from the radiative muon capture (RMC) process was built. The spectrometer was used to measure the RMC branching ratio for AI, Si, Ca, Mo, Sn and Pb. Two recent theoretical models were used to extract the RMC branching ratio in Ca. The experin1ental result is in good agreement with the world average value, but yields a value for the pseudoscalar coupling constant, gp, which is lower than the Goldberger-Treiman PCAC prediction. In the absence of a theoretical model to predict the R11C rates for Al and 5i, only the branching ratios for these targets are reported. For Mo, 5n, and Pb, the branching ratios found were consistent with the Fermi gas n10del for which a nill contribution from the pseudoscalar coupling was assumed. Good agreement was found between the experimental results and what is predicted fron1 using the simple, closure approximation. The RMC world data indicates a close connection between the branching ratios and Q, where Q is the ratio between the difference and the sum of neutrons and protons for any element, (Q = ~Z~~J). It is suggested that future experiments study different isotopes to isolate the Z and the Q dependence of the R11C rates. This experiment also served as a test ground for the RMC experin1ent in liquid hydrogen which is now in progress at TRIUMF. / Ph. D.

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