Interactions of satellite-speed helium atoms with satellite surfaces. 3: Drag coefficients from spatial and energy distributions of reflected helium atoms

Spatial and energy distributions of helium atoms scattered from an anodized 1235-0 aluminum surface as well as the tangential and normal momentum accommodation coefficients calculated from these distributions are reported. A procedure for calculating drag coefficients from measured values of spatial and energy distributions is given. The drag coefficient calculated for a 6061 T-6 aluminum sphere is included

P-values for non-standard distributions with an application to the DF test

The literature of unit roots and structural breaks has produced numerous tests that follow nonstandard asymptotic distributions. This paper by fitting a seminonparametric model to them proposes a new simple way of calculating the p-values

Wigner Distributions Using Light-Front Wave Functions

We report on some recent advances in calculating the Wigner distributions for quarks and gluons, using overlaps of light-front wave functions.Comment: Talk given at the QCD Evolution Workshop, May 22-26, 2017, Jefferson Lab, US