# Browse by Subject "hydrogen"

• (2012-09-18)
The MuCap experiment measures the mu^- disappearance rate, l_-, in a gaseous hydrogen time projection chamber (TPC) and compares it to the free mu^+ decay rate, l_+, to obtain the mu p singlet capture rate L_S. The motivation ...

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• (2015-01-21)
Quantitative phase imaging (QPI) is a flourishing new field which has recently found tremendous success in the life sciences. QPI utilizes not only the amplitude of the imaging field, but also its phase, in order to provide ...

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• (2010-01-06)
This thesis presents two models of the effect of hydrogen on materials. Both models are intended to link experimental observations of material microstructure with macroscopically observable results. The first model creates ...

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• (1991)
The 1 /f resistance fluctuations of thin Nb films was studied from 60 K to 400 K. The resistance noise came from hydrogen ions and other defects placed in the films during sputtering. Hydrogen ions cause three types of ...

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• (1987)
Hydrogen has been dissolved in Nb/Ta superlattices for which the structural and thermodynamic properties of this new H-metal system were studied, in situ, by x-ray diffraction. It is found that H induces a strain ...

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• (1993)
An experimental study of hydrogen dissolved in thin films of niobium is presented. The chief techniques used were x-ray diffraction and ion-beam hydrogen profiling. Niobium was grown on sapphire substrates by molecular ...

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• (2011-05-25)
Miniaturization of power generators to the MEMS scale, based on the hydrogen-air fuel cell, is the object of this research. The micro fuel cell approach has been adopted for advantages of both high power and energy densities. ...

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• (2011-05-25)
High-resolution spectroscopy of molecular ions has been proven to be a difficult endeavor. Generating significant quantities of the desired ions and discriminating ions from neutrals are among some of the many difficulties ...

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• (2011-01-14)
This thesis presents a model to simulate the effects of hydrogen on the mechanical behavior of single crystals. A macroscopic crystal plasticity model is formulated based on the fundamentals of the hydrogen-dislocation ...

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• (1990)
The photoionization spectrum of highly excited hydrogen atoms in the energy range between E = 0 and E = Ec ionization thresholds is examined in the presence of a strong de electric field. Atomic hydrogen is excited from ...

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• (2000)

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• (1964)
An experiment has been done to improve available measurements of pi+ photoproduction cross sections very near threshold 0 To do this, a 1410 hydrogen bubble chamber was used in an X-ray beam with Emax = 230 MeV. Meson ...

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• (2011-01-21)
This thesis research has successfully carried out a QMC study of hydrogen adsorption on Ti-ethylene molecular systems demonstrating reversible hydrogen adsorption on molecular TiH$_2$C$_2$H$_4$. This system is chosen as ...

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• (1994)
Variational and Diffusion Monte Carlo are powerful computational methods which can afford accurate estimates of the ground state properties of quantum many-body problems. We have applied these Monte Carlo methods to the ...

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• (2014-01-16)
With their high capacity, light-metal hydrides – like MgH2 – remain under scrutiny as reversible H-storage materials. A key question persists: Is there a means to enhance the hydrogen desorption/adsorption properties of ...

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