TITLE

Quadrupole photoionization of hydrogen atoms in Debye plasmas

AUTHOR(S)
Lin, C. Y.; Ho, Y. K.
PUB. DATE
September 2010
SOURCE
Physics of Plasmas;Sep2010, Vol. 17 Issue 9, p093302
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Although a great deal of effort has been devoted to investigating dipole photoionization of plasma-embedded atoms, far less is known about the corresponding quadrupole transitions. In the present work, quadrupole photoionization processes for the ground and excited states of hydrogen atoms in Debye plasma are explored using the method of complex coordinate rotation. The plasma shielding effects on the quadrupole photoionization cross sections are reported for a variety of Debye screening lengths and compared to the dipole results accordingly. Under the perturbation of plasma screening, shape resonances and Cooper-type minima occurring in both dipole and quadrupole photoionization cross sections are presented and discussed. Comparisons are made to other theoretical calculations for the dipole photoionization with good agreement. The present quadrupole results are the first predictions for hydrogen photoionization in Debye plasmas.
ACCESSION #
54050004

 

Related Articles

  • Resistive internal kink modes in a differentially rotating cylindrical plasma. Mikhailovskii, A. B.; Lominadze, J. G.; Galvão, R. M. O.; Churikov, A. P.; Erokhin, N. N.; Konovalov, S. V.; Smolyakov, A. I.; Tsypin, V. S. // Physics of Plasmas;Nov2007, Vol. 14 Issue 11, p112104 

    The resistive internal kink modes in a differentially rotating cylindrical plasma column are studied. It is shown that the Velikhov effect, which causes the magnetorotational instability in astrophysics, contributes to the magnetic hill/well and thereby enhances or suppresses these modes,...

  • Plasma screening effects on photoionizations in weakly coupled plasmas. Young-Dae Jung // Physics of Plasmas;Oct98, Vol. 5 Issue 10, p3781 

    Investigates plasma screening effects on photoionizations from a state of hydrogenic ions in dense weakly plasmas. Process of obtaining particle interaction potential in weakly coupled plasmas; Modification of the initial bound wave function and energy eigenvalue of the target ion in the...

  • K-shell photoionizations in classical nonideal plasmas. Jung, Young-Dae // Physics of Plasmas;Jun2001, Vol. 8 Issue 6, p3111 

    Collective and plasma screening effects on photoionization cross sections from the 1s state of hydrogenic ions in classical nonideal plasmas are investigated. An effective pseudopotential model taking into account the collective and plasma screening effects is applied to describe the interaction...

  • Hydrogen abstraction from hydrogenated amorphous silicon surface by hydrogen atoms. Muramatsu, Yasuji; Yabumoto, Norikuni // Applied Physics Letters;11/10/1986, Vol. 49 Issue 19, p1230 

    HD formation reaction was investigated in H2 plasma over deuterium-incorporating hydrogenated amorphous silicon (a-Si:H:D). The activation energy of the reaction was determined to be 2.4±0.7 kcal mol-1, which was consistent with the abstraction reaction of hydrogen from some silane...

  • Hydrogen Balmer alpha line shapes for hydrogen-argon mixtures in a low-pressure rf discharge. Djurovic, S.; Roberts, J. R. // Journal of Applied Physics;12/1/1993, Vol. 74 Issue 11, p6558 

    Presents a study which examined the spectral and spatial profiles of atomic hydrogen emission from a low-pressure radio frequency discharge. Observation on the plasma emission; Comparison of the atomic hydrogen emission profiles in a pure hydrogen plasma; Overview of previous studies on Balmer...

  • Application of two-photon-excited laser-induced fluorescence to atomic hydrogen measurements in the edge region of high-temperature plasmas. Kajiwara, Toshinori; Shinkawa, Tatsuya; Uchino, Kiichiro; Masuda, Mitsuharu; Muraoka, Katsunori; Okada, Tatsuo; Maeda, Mitsuo; Sudo, Sigeru; Obiki, Tokuhiro // Review of Scientific Instruments;Oct91, Vol. 62 Issue 10, p2345 

    A two-photon-excited laser-induced fluorescence (LIF) was applied to measurement of atomic hydrogen densities in the edge region of high-temperature plasmas of Heliotron E for the first time. In this application, fluorescence signals were observed coaxially to the laser beam. This was possible...

  • Detection of ground-state atomic hydrogen in a dc plasma using third-harmonic generation. Celii, F. G.; Thorsheim, H. R.; Butler, J. E.; Plano, L. S.; Pinneo, J. M. // Journal of Applied Physics;10/15/1990, Vol. 68 Issue 8, p3814 

    Presents a study which utilized the third-harmonic generation to monitor ground-state atomic hydrogen in a direct current plasma system. Experimental details; Results and discussion; Conclusion.

  • Abstraction of D adsorbed on Pt(111) surfaces with gaseous H atoms. Wehner, S.; Kuppers, J. // Journal of Chemical Physics;2/22/1998, Vol. 108 Issue 8, p3353 

    Examines the influence of gaseous hydrogen at deuterium covered platinum(111) surfaces at 85 Kelvin leading to the formation of gaseous HD and D[sub 2] products. Measurement of kinetics of formation of gaseous HD and D[sub 2] products; Observation of HD and D[sub 2] rate steps; Calibration of...

  • Study of plasma rotation in the GOL-3 facility. Sudnikov, A.; Burdakov, A.; Ivanov, I.; Makarov, M.; Mekler, K.; Rovenskikh, A.; Polosatkin, S.; Postupaev, V.; Sinitsky, S.; Sorokina, N.; Sulyaev, Yu. // Plasma Physics Reports;Sep2012, Vol. 38 Issue 9, p718 

    The MHD activity of plasma in the GOL-3 facility was studied experimentally. The complicated azimuthal structure of the profile of the longitudinal current is revealed by magnetic measurements and high-speed imaging. The azimuthal mode composition of magnetic perturbations, as well as the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics