First determination of gas hydrate crystallite size distributions using high-energy synchrotron radiation

Nuclear Fluorescence Using High-energy Synchrotron Radiation

We present some measurements of nuclear fluorescence which were made while exploring the potential of a unique source of very hard x-rays which was installed at ESRF until recently. It produced radiation of energies up to 1MeV. In this range there are many nuclear resonances, and so we made a small survey of some plausible candidates to see if they could indeed be excited using this source. Alo...

Slc Energy Spectrum Monitor Using Synchrotron Radiation’

The SLAC Liiac is being upgraded for the use in the SLAC Linear Collider (SLC). The improved Linac must accelerate electron and positron bunches from 1.2 GeV to 50 GeV while producing output energy spectra of about 0.2 %. The energy spectra must be maintained during operation to provide for good beam transmission and to minimize chromatic effects in the SLC ARCs and Find Focus. The energy spect...

Charge Determination of High Energy Electrons and Nuclei by Synchrotron Radiation with AMS

We investigate the possibilities to identify the charge of TeV electrons and PeV nuclei using their synchrotron radiation in the earth’s magnetic field. Characteristics of synchrotron radiation photons are evaluated and methods of detection are discussed. To be published in Nucl. Inst. Meth.

Determination of Crystallite Size with the XRay Spectrometer

Sample Size Determination Using Posterior Predictive Distributions

A statistical model developed from scientific theory may “fail to fit” the available data if the scientific theory is incorrect or if the sample size is too small. The former point is obvious but the latter is more subtle. In the latter case, the hypothesized model may fail to fit in the sense that it is viewed as unnecessarily complicated, and so the investigators settle upon a simpler model t...