An approach for improving signal-to-noise ratio in photoelectron velocity map imaging experiments

被引：0

作者：

Ren, Yangdi ^{[1
]}

Qin, Zhengbo ^{[1
]}

Wang, Hui ^{[1
]}

Zheng, Xianfeng ^{[1
]}

Cui, Zhifeng ^{[1
]}

机构：

[1] Anhui Normal Univ, Anhui Prov Key Lab Optoelect Mat Sci & Technol, Wuhu 241000, Peoples R China

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2018年 / 222卷

基金：

美国国家科学基金会; 安徽省自然科学基金;

关键词：

Background irradiated electrons; Photoelectron velocity map imaging; Signal-to-noise ratio; HIGH-RESOLUTION PHOTODETACHMENT; NEGATIVE-IONS; SPECTROSCOPY;

D O I：

10.1016/j.elspec.2017.11.001

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Background irradiated electrons in photoelectron spectra are known to take place under the ultraviolet light irradiation. Therefore, it deserves discussing the reduction of such electrons in the electron spectra in this work. The main problem present in these electron spectra will largely be overcome through a workflow and process, namely, a combination method of rotating images with angular-tailored and subtracting noise electrons of images which gives rise to non-noise electron peaks. An improved SNR is readily obtained for REMPI-SEVI spectra of 3-bromofluorobenzene (3-Br-FPh) compared with no noise-subtracted and no-angular-tailored spectra. More details are given including electron velocity-map imaging analysis on S-, CuOH-(H2O), and 3-Br-FPh in the following sections. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：5 / 9

页数：5

共 16 条

[1] Imaging chemical reactions-3D velocity mapping
Chichinin, A. I.
Gericke, K-H.
Kauczok, S.
Maul, C.
[J]. INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY, 2009, 28 (04) : 607 - 680
[2] ANGULAR DISTRIBUTION OF PHOTOELECTRONS
COOPER, J
ZARE, RN
[J]. JOURNAL OF CHEMICAL PHYSICS, 1968, 48 (02) : 942 - &
[3] Reconstruction of abel-transformable images: The Gaussian basis-set expansion abel transform method
Dribinski, V
Ossadtchi, A
Mandelshtam, VA
Reisler, H
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2002, 73 (07) : 2634 - 2642
[4] Velocity map imaging of ions and electrons using electrostatic lenses: Application in photoelectron and photofragment ion imaging of molecular oxygen
Eppink, ATJB
Parker, DH
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (09) : 3477 - 3484
[5] Two-dimensional charged particle image inversion using a polar basis function expansion
Garcia, GA
Nahon, L
Powis, I
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (11) : 4989 - 4996
[6] Applications of slow electron velocity map imaging to the study of spectroscopy and dynamics in small aromatic molecules
Hammond, Chris J.
Reid, Katharine L.
[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2008, 10 (45) : 6762 - 6769
[7] High resolution photoelectron imaging of Au2-
Leon, Iker
Yang, Zheng
Wang, Lai-Sheng
[J]. JOURNAL OF CHEMICAL PHYSICS, 2013, 138 (18)
[8] HIGH RESOLUTION PHOTODETACHMENT OF S- NEAR THRESHOLD
LINEBERGER, WC
WOODWARD, BW
[J]. PHYSICAL REVIEW LETTERS, 1970, 25 (07) : 424 - +
[9] Slow Electron Velocity-Map Imaging of Negative Ions: Applications to Spectroscopy and Dynamics
Neumark, Daniel M.
[J]. JOURNAL OF PHYSICAL CHEMISTRY A, 2008, 112 (51) : 13287 - 13301
[10] High resolution photodetachment spectroscopy of negative ions via slow photoelectron imaging
Osterwalder, A
Nee, MJ
Zhou, J
Neumark, DM
[J]. JOURNAL OF CHEMICAL PHYSICS, 2004, 121 (13) : 6317 - 6322

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