Plasma Surface Treatment of Materials

Probing quantum solvation with infrared spectroscopy: infrared activity induced in solid parahydrogen by N2 and Ar dopants

“…Consequently, the pH2 crystal is bound together only by weak pH2~pH2 dispersion interactions, making solid pH2 a very "soft" and nearly nonperturbing environment for molecular impurities. This has motivated recent high-resolution infrared (IR) absorption studies [2][3][4] of the rovibrational spectra and dynamics of dopants embedded in solid pH2 matrices. Analysis of these specfra within the framework of crystal field theory provides valuable information on dopant-pHi interactions and on the microscopic nature of dopant trapping sites in the pH2 matrix.…”

“…DOI: fauxPRL.doc PACS numbers: 33.20.Ea, 67.80.-s, 78.30.-j Solid hydrogen and its isotopomers (HD and D2) have long been recognized as unique cryogenic media for higliresolution spectroscopic studies of molecular rovibrational dynamics in condensed phases [1,2]. In the lowest energy state of the solid H2 crystal, solid parahydrogen (PH2), each H2 molecule is in its j=0 rotational state and is therefore a spherically symmetric object with no electrostatic multipole moments.…”

Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy

“…Parahydrogen crystals were grown by the same method as described previously [13,17]. Briefly, pure parahydrogen gas prepared using a ferric oxide catalyst [17] was continuously introduced in an optical cell kept at about 8 K to grow transparent crystals.…”

Controllable quantum spin glasses with magnetic impurities embedded in quantum solids

“…The technique of matrix isolation is frequently used in chemical physics for high-resolution spectroscopy of individual molecules and to study basic chemical reactions. In addition, this technique allows one to acquire the spectra of chemical species, such as radicals, whose reaction times are extremely fast in the gas phase [15][16][17] . For sufficiently inert matrices, the spectral lines of matrix-isolated species are sharper than those in the gas phase, owing to the absence of motional broadening-the atoms can be regarded as both fixed in space and undisturbed by their environments.…”