A New Insight on Stereo-Dynamics of Penning Ionization Reactions

An analysis of the degree of convergence of theoretical pictures of the dynamics of the autoionization event He(23S)-D2(v" = 0) -> [He...D2+(v')] + e is presented for a number of batches of Monte Carlo calculations differing in the number of the trajectories run. The treatment of the dynamics consists in 2D classical trajectory calculations based on static characteristics which include a quantum mechanical treatment of the perturbed D2(v" = 0) and D2+(v') vibrational motion. The vibrational populations are dynamical averages over the local widths of the He(23S)-D2(v" = 0) state with respect to autoionization to D2+(...He) in its v'th vibrational level and the Penning electron energies are related to the local differences between the energies of the corresponding perturbed D2(v" = 0)(...He*) and D2+(v')(...He) vibrational states. Special attention is paid to the connection between the requirements on the degree of convergence of the classical trajectory picture of the event and the purpose of the calculations. Information is obtained regarding a scale of the trajectory calculations required for physically sensible applications of the model to an interpretation of different type of experiments on the system: total ionization cross section measurements, Penning ionization electron spectra, subsequent 3D classical trajectory calculations of branching ratios of the products of the postionization collision process, and interpretation of electron ion coincidence measurements of the product branching ratios for individual vibrational levels of the nascent Penning ion.

Download Full-text

Penning ionization electron spectroscopy, UPS and TPD of NCCN on Pd(100)

Surface Science ◽

10.1016/0039-6028(86)90342-0 ◽

1986 ◽

Vol 178 (1-3) ◽

pp. 667-678 ◽

Cited By ~ 37

Author(s):

K. Besenthal ◽

G. Chiarello ◽

M.E. Kordesch ◽

H. Conrad

Keyword(s):

Electron Spectroscopy ◽

Penning Ionization ◽

Ionization Electron

Download Full-text

The measurement of Penning ionization cross sections for helium 23S metastables using a steady-state flowing afterglow method

Journal of Physics B Atomic and Molecular Physics ◽

10.1088/0022-3700/3/1/014 ◽

1970 ◽

Vol 3 (1) ◽

pp. 61-71 ◽

Cited By ~ 71

Author(s):

R C Bolden ◽

R S Hemsworth ◽

M J Shaw ◽

N D Twiddy

Keyword(s):

Steady State ◽

Cross Sections ◽

Flowing Afterglow ◽

Ionization Cross ◽

Penning Ionization ◽

Ionization Cross Sections

Download Full-text

Penning ionization electron spectroscopy of nitriles

The Journal of Physical Chemistry ◽

10.1021/j150646a010 ◽

1984 ◽

Vol 88 (2) ◽

pp. 206-209 ◽

Cited By ~ 34

Author(s):

Koichi Ohno ◽

Setsuo Matsumoto ◽

Keitaro Imai ◽

Yoshiya Harada

Keyword(s):

Electron Spectroscopy ◽

Penning Ionization ◽

Ionization Electron

Download Full-text

Measurements of the cross section for penning ionization of H by He 23S metastables

Chemical Physics Letters ◽

10.1016/0009-2614(71)80601-2 ◽

1971 ◽

Vol 8 (1) ◽

pp. 148-152 ◽

Cited By ~ 25

Author(s):

M.J. Shaw ◽

R.C. Bolden ◽

R.S. Hemsworth ◽

N.D. Twiddy

Keyword(s):

Cross Section ◽

Penning Ionization ◽

The Cross

Download Full-text

Penning ionization ternary gas mixtures for diffuse discharge switching applications

Journal of Applied Physics ◽

10.1063/1.336201 ◽

1985 ◽

Vol 58 (2) ◽

pp. 633-641 ◽

Cited By ~ 13

Author(s):

K. Nakanishi ◽

L. G. Christophorou ◽

J. G. Carter ◽

S. R. Hunter

Keyword(s):

Gas Mixtures ◽

Penning Ionization ◽

Diffuse Discharge

Download Full-text

ChemInform Abstract: Local Electron Distribution of Individual Molecular Orbitals Studied by Penning Ionization Electron Spectroscopy: Iron Phthalocyanine.

ChemInform ◽

10.1002/chin.198724039 ◽

1987 ◽

Vol 18 (24) ◽

Author(s):

H. OZAKI ◽

Y. HARADA

Keyword(s):

Electron Spectroscopy ◽

Electron Distribution ◽

Molecular Orbitals ◽

Iron Phthalocyanine ◽

Local Electron ◽

Penning Ionization ◽

Ionization Electron

Download Full-text

Deleterious processes of a diode-pumped cesium vapor hollow-core photonic-crystal fiber laser

High Power Laser Science and Engineering ◽

10.1017/hpl.2016.37 ◽

2016 ◽

Vol 4 ◽

Author(s):

Guofei An ◽

You Wang ◽

Juhong Han ◽

He Cai ◽

Zhigang Jiang ◽

...

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Cesium Vapor ◽

Hollow Core ◽

Penning Ionization ◽

Photonic Bandgap Fiber ◽

Crystal Fiber ◽

Energy Pooling ◽

Glass Cell ◽

Diode Pumped

A diode-pumped alkali laser (DPAL) provides the significant promise for high-powered performances. In this paper, a mathematical model is introduced for examination of the kinetic processes of a diode-pumped cesium vapor hollow-core photonic-crystal fiber (HC-PCF) laser, in which the cesium vapor is filled in the center hole of a photonic-bandgap fiber instead of a glass cell. The influence of deleterious processes including energy pooling, photo-ionization, and Penning ionization on the physical features of a fiber DPAL is studied in this report. It has been theoretically demonstrated that the deleterious processes cannot be ignored in a high-powered fiber-DPAL system.

Download Full-text