Dissociative Electron Attachment Cross Sections for H2 and D2

被引：44

作者：

Krishnakumar, E. ^{[1
,2
]}

Denifl, S. ^{[3
]}

Cadez, I. ^{[4
]}

Markelj, S. ^{[4
]}

Mason, N. J. ^{[2
]}

机构：

[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[2] Open Univ, Dept Phys & Astron, Milton Keynes MK7 6AA, Bucks, England

[3] Univ Innsbruck, Inst Ion Phys & Appl Phys, A-6020 Innsbruck, Austria

[4] Jozef Stefan Inst, Ljubljana 1000, Slovenia

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 24期

关键词：

H2; HYDROGEN; IMPACT; D2; MOLECULES; HD;

D O I：

10.1103/PhysRevLett.106.243201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

New measurements of the absolute cross sections for dissociative electron attachment (DEA) in molecular hydrogen and deuterium are presented which resolve previous ambiguities and provide a test bed for theory. The experimental methodology is based upon a momentum imaging time-of-flight spectrometer that allowed us to eliminate any contributions due to electronically excited metastable neutrals and ultraviolet light while ensuring detection of all the ions. The isotope effect in the DEA process in the two molecules is found to be considerably larger than previously observed. More importantly, it is found to manifest in the polar dissociation process (also known as ion pair production) as well.

引用

页数：4

共 50 条

[21] RATES OF DISSOCIATIVE ATTACHMENT OF ELECTRONS TO EXCITED H-2 AND D2
WADEHRA, JM
APPLIED PHYSICS LETTERS, 1979, 35 (12) : 917 - 919
[22] Differential cross sections for pμ + H2 and dμ + D2 scattering using the Morse potential
Gronowski, Jakub
Adamczak, Andrzej
PHYSICS LETTERS A, 2010, 374 (27) : 2730 - 2735
[23] Cross sections for the dissociative electron attachment to ozone
Rangwala, SA
Kumar, SVK
Krishnakumar, E
Mason, NJ
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1999, 32 (15) : 3795 - 3804
[24] Isotope effect in dissociative electron attachment to H2 at 4 eV
Fedor, J.
Kocisek, J.
Janeckova, R.
XXIX INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC, AND ATOMIC COLLISIONS (ICPEAC2015), PTS 1-12, 2015, 635
[25] Narrow resonances in dissociative electron attachment and vibrational excitation in H2
Cizek, Martin
Photonic, Electronic and Atomic Collisions, 2006, : 344 - 351
[26] Nonlocal theory of dissociative electron attachment to H2 and HF molecules
Gallup, GA
Xu, Y
Fabrikant, II
PHYSICAL REVIEW A, 1998, 57 (04): : 2596 - 2607
[27] MEASUREMENTS OF TOTAL CROSS SECTIONS FOR H2 D2 AND HE SCATTERING AT THERMAL ENERGIES
MCARDLE, KT
GRACE, RS
MANN, DC
SKOFRONI.JG
BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1968, 13 (04): : 613 - &
[28] ABSORPTION CROSS-SECTIONS OF H2 AND D2 FROM 180 TO 780 DEGREESA
LEE, LC
CARLSON, RW
JUDGE, DL
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 1976, 16 (10): : 873 - 877
[29] DIFFUSION COEFFICIENTS OF T2-H2 AND T2-D2 - NONEQUIVALENCE OF H2 AND D2 CROSS SECTIONS
MASON, EA
ANNIS, BK
ISLAM, M
JOURNAL OF CHEMICAL PHYSICS, 1965, 42 (10): : 3364 - &
[30] Cross sections for 14-eV e-H2 resonant collisions: Dissociative electron attachment
Celiberto, R.
Janev, R. K.
Wadehra, J. M.
Laricchiuta, A.
PHYSICAL REVIEW A, 2009, 80 (01):

← 1 2 3 4 5 →