14464-47-2Relevant articles and documents
Millimetre-wave Electronic Spectrum of the D2(1+) Ion
Carrington, Alan,Gammie, David I.,Shaw, Andrew M.,Taylor, Susie M.
, p. 1887 - 1890 (1995)
We have extended our earlier microwave and IR measurements of the 2p?u-1s?g electronic spectrum of D2(1+) into the millimetre-wave region of the spectrum, and report the measurement of a further eight vibration-rotation components.The measured transition frequencies and the nuclear hyperfine splittings are very close to those predicted by the best ab initio calculations.
Collision energy dependence of product branching in Penning ionization: He*(2 1S, 2 3S) + H2, D2, and HD
Martin, D. W.,Weiser, C.,Sperlein, R. F.,Bernfeld, D. L.,Siska, P. E.
, p. 1564 - 1576 (1989)
Relative ionization cross sections for the title systems with articulation of all product ion channels have been measured in the collision energy range 1.5-4.0 kcal/mol using crossed supersonic molecular beams; the H2 results have been extended down to 0.
The effect of vibration and translational energy on the reaction dynamics of the H2+ + H2 system
Anderson, Scott L.,Houle, F. A.,Gerlich, D.,Lee, Y. T.
, p. 2153 - 2162 (1981)
A new experimental technique combining molecular beams, photoionization, and guided beam ion optics has been used to study several isotopic H2+ + H2 reactions.The technique is described.By using this method we are able to observe the effects of both reagent translational and vibrational energy.Cross sections are reported for charge transfer, H3+ formation, and collision induced dissociation.Evidence is seen for competition between the channels, charge hopping in the reaction entrance channel, potential energy surface hopping, reaction on excited potential surfaces, and isotopic scrambling.A model for the reaction which takes into account the multisurface nature of the systems seems to explain the results satisfactorily.
Surface induced dissociation of HD2+ - A non-statistical behavior in the H+ and D+ fragmentation channels
Qayyum,Mair,Schustereder,Scheier,Hess,M?rk
, p. 166 - 172 (2003)
Surface induced dissociation (SID) of HD2+ upon impact on a Tore Supra tokamak graphite tile was studied in the collision energy range from 20 to 100 eV. SID of the projectile ion HD2+ on this graphite surface yields exclusively atomic fragment ions H+ and D+, whereas other possible fragment ions HD+ and D2+ were completely absent. In contrast to the statistical ratio of 2:1 of D:H in the HD2+ ion, the relative abundances of the measured H+ and D+ fragment ions were about of equal magnitude over the whole collision energy range studied. This non-statistical decay can be accounted for by vibrational predissociation through a minimal centrifugal barrier at a total angular momentum of about J～27-30.
State selected ion-molecule reactions by a TESICO technique. II. Separation of the reactant spin-orbit states in the reaction Ar+ (2P3/2,2P1/2) + H2(D2) -> ArH+(ArD+) + H(D)
Tanaka, Kenichiro,Durup, Jean,Kato, Tatsuhisa,Koyano, Inosuke
, p. 5561 - 5571 (1981)
Cross sections for the atomic rearrangement reaction Ar+ + H2(D2) -> ArH+(ArD+) + H(D) and the charge transfer reaction Ar+ + H2(D2) -> Ar + H2+(D2+) have been determined for each of the Ar+ spin-orbit states (2P3/2 and 2P1/2) separately in the collision energy range from 0.05 to 0.5 eV (c.m.), utilizing the threshold electron-secondary ion coincidence (TESICO) technique which we developed recently.It has been found that the cross sections of Reaction(1) are larger for the 2P1/2 excited state than for the 2P3/2 ground state by a factor of 1.5 (with H2) and 1.3 (with D2), regardless of the collision energy in the range studied.The cross sections for both the H2 and D2 reactions show an approximately E-1/2.5 collision energy dependence which is somewhat milder than that expected from the simple Langevin theory.The cross sections of Reaction (2) have been found to be about seven times larger for the 2P1/2 state than for the 2P3/2 state with H2, whereas these are almost the same for both states with D2.The charge transfer cross sections are almost independent of the collision energy in the same energy range as above.A simple reaction model has been developed and a calculation of cross sections has been performed based on it, with a result which satisfactorily explains the essential features of the experimental results.
Zero kinetic energy proton and deuteron production from photoionization of H2 and D2
He, Z. X.,Cutler, J. N.,Southworth, S. H.,Hughey, L. R.,Samson, J. A. R.
, p. 3912 - 3916 (1995)
A zero ion kinetic energy spectrometer has been developed to study the production of near zero energy protons and deuterons from dissociative photoionization of H2 and D2.Both H+ and D+ spectra show four peaks on top of a continuum.The continuum was found to be in excellent agreement with the single center Coulomb calculation for the direct dissociation through the X 2Σ+g state of H2+.The observed structures were shown to originate from autoionization of the doubly excited Q1 1Σ+g(1), Q1 1Σ+u(1), Q1 1Σ+u(2), and Q2 1Σ+u(1) states, of which the Q1 1Σ+g(1) state is dipole forbidden.
