Energy partitioning in elementary gas phase reactions: Progress report, March 1, 1986--August 31, 1988

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6701852

Bersohn, R

During the last 2 1/2 years we: (1) Measured the cross sections of the reactions (H + D/sub 2/ = HD + D, H + HD = H/sub 2/ + D) as a function of relative translational energy in the range 1 to 3 eV. (2) Measured the cross sections and translational energy release in exchange reactions with 1.1 eV H atoms (H + DCCD = D + HCCD, H + CH/sub 3/CCD = CH/sub 3/CCH + D, H + C/sub 2/D/sub 4/ = C/sub 2/D/sub 3/H + D, H + CD/sub 3/CDCD/sub 2/ = CD/sub 3/CDCDH + D). (3) Starting with fairly monoenergetic 2.5 eV H atoms the evolution of their velocity distribution was studied as a function of pressure of the rare gases, O/sub 2/ and N/sub 2/. (4) Measured the rate of dissociation of monoenergetically excited methylaromatics into benzyl radicals and hydrogen atoms and also kinetic energy distribution of the latter. (5) In a series of studies on HN/sub 3/ and NH(a/sup 1//Delta/) it was found (a) the quantum yield at 248 nm of the reaction HNNN + h/nu/ = H + NNN is 0.38; (b) the translational energy release and rate constant were measured for the reaction NH(a) + D/sub 2/ = NHD + D; and (c) in the quenching process NH(a/sup 1//Delta/) + Xe = NH(X/sup 3//Sigma/) + Xe the energy release is almost entirely into translation. (6) Measured the state distribution of the CN product of reactions (H + HCN = H/sub 2/ + CN, F + HCN = HF + CN, H + ClCN = HCl + CN, and the isotopic ratio of the reaction CN + HD = H(D) + HCN(DCN)). (7) Measured the state distribution of the CN radicals dissociated from phenyl cyanide and phenyl isocyanide at 193 nm. (8) Measured the hydrogen atom kinetic energy and isotope effects in the dissociation of methanol excited by light or by a chemical reaction. 12 refs., 3 figs.

• Research Organization: Columbia Univ., New York (USA). Dept. of Chemistry
• DOE Contract Number: FG02-86ER13492
• OSTI ID: 6701852
• Report Number(s): DOE/ER/13492-1; ON: DE89003799
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARYL RADICALS
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BENZYL RADICALS
CARBON COMPOUNDS
COLLISIONS
CROSS SECTIONS
DEUTERIUM
DOCUMENT TYPES
ELEMENTS
ENERGY
ENERGY TRANSFER
EXCHANGE INTERACTIONS
HYDROGEN
HYDROGEN ISOTOPES
INTERACTIONS
ISOTOPES
KINETIC ENERGY
LIGHT NUCLEI
NITROGEN
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PROGRESS REPORT
RADICALS
STABLE ISOTOPES