The Mechanism of the Photolysis of Certain Hydrocarbons by Vacuum Ultraviolet Radiation

Abstract

A recurrent method for irreducible representation calculation of five-dimensional quasispin group SO(5)t is proposed. The explicit IRs in physical orthonormal basis with multiplicity 3 2>up to three, such as (2tt), (2t + 2t) and (It) when t = 1, §, 2, § are given.

Contaminations of inner surface of magnesium fluoride windows in the ‘Expose-R’ experiment on the International Space Station

“…Indeed, alpha-line of Lyman series of atomic hydrogen (121.6 nm; photon energy 10.7 eV) dominates in the spectrum of Solar VUV radiation. Moreover, radiation with wavelength 121.6 nm induces photoionization of macromolecules with their subsequent transformations similar to those induced by other types of ionizing radiations (Dorofeev & Skurat 1982;Barbashev et al 1992;Van Eesbeek et al 1994;Skurat et al 1997;Skurat et al 2001;Skurat & Samsonov 2001;Skurat 2003). However, a substantial difference of absorbed radiation doses is observed in gamma-radiolysis, bombardment by fast electrons and VUV irradiation (see, for example, (Skurat 2003)).…”

Modeling discharge and surface processes in capacitively coupled reactors

“…This effect is usually referred to as standing wave effect or finite wavelength effect in the literature. [19][20][21][22] For example, Hebner et al performed diagnostics of single frequency operating in argon and driven at frequencies between 10 and 190 MHz. [22] They found that with grounded lower electrode the spatial distribution of argon ions transitioned from uniform to center peaked as the excitation frequency was increased on the upper electrode, as shown in Fig.…”

“…Skin effects usually develop with increasing power deposition or pressure and tends to enhance the power deposition near the electrode edges. [19][20][21][22] Another method of improving the performance of CCP sources is applying a transverse static magnetic field (tens to hundreds of Gauss) approximately parallel to the electrodes with the goal of either increasing the plasma density for a given pressure or lowering the operating pressure. In this configuration the devices are often called magnetically enhanced reactive ion etching (MERIE) reactors.…”

“…where p is the quantum yield. [22] For partially fluorinated PP, we assumed that H 2 will be extracted if both tertiary and secondary H atoms are available on a PP unit; F 2 will be extracted if all tertiary and secondary H atoms have been substituted by F atoms; and HF will be extracted for other cases.…”

“…Dorofeev et al [22] determined that a representative process is, (27) where two chain-ending units are produced. The quantum yield for this process is about 0.25 at 147 nm.…”