A novel high-current, high-resolution, low-kinetic-energy electron source for inverse photoemission spectroscopy

被引：0

作者：

Ibach, Harald ^{[1
]}

Sato, Haruki ^{[2
]}

Kubo, Mihiro ^{[2
]}

Tautz, F. Stefan ^{[3
,4
,5
]}

Yoshida, Hiroyuki ^{[2
,6
,7
]}

Bocquet, Francois C. ^{[3
,4
]}

机构：

[1] Forschungszentrum Julich, Peter Grunberg Inst PGI 6, D-52425 Julich, Germany

[2] Chiba Univ, Grad Sch Sci & Engn, 1-33 Yayoi Cho,Inage Ku, Chiba 2638522, Japan

[3] Forschungszentrum Julich, Peter Grunberg Inst PGI 3, D-52425 Julich, Germany

[4] Julich Aachen Res Alliance JARA, Fundamentals Future Informat Technol, D-52425 Julich, Germany

[5] Rhein Westfal TH Aachen, Expt Phys 4 A, Otto Blumenthal Str, D-52074 Aachen, Germany

[6] Chiba Univ, Grad Sch Engn, 1-33 Yayoi Cho,Inage Ku, Chiba 2638522, Japan

[7] Chiba Univ, Mol Chiral Res Ctr, 1-33 Yayoi Cho,Inage Ku, Chiba 2638522, Japan

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2023年 / 94卷 / 04期

关键词：

ANGLE;

D O I：

10.1063/5.0138512

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A high-current electron source for inverse photoemission spectroscopy is described. The source comprises a thermal cathode electron emission system, an electrostatic deflector-monochromator, and a lens system for variable kinetic energy (1.6-20 eV) at the target. When scaled to the energy resolution, the electron current is an order of magnitude higher than that of previously described electron sources developed in the context of electron energy loss spectroscopy. Surprisingly, the experimentally measured energy resolution turned out to be significantly better than calculated by standard programs, which include the electron-electron repulsion in the continuum approximation. The achieved currents are also significantly higher than predicted. We attribute this "inverse Boersch-effect" to a mechanism of velocity selection in the forward direction by binary electron-electron collisions.

引用

页数：10

共 2 条

[1] High energy resolution bandpass photon detector for inverse photoemission spectroscopy
Maniraj, M.
D'Souza, S. W.
Nayak, J.
Rai, Abhishek
Singh, Sanjay
Sekhar, B. N. Raja
Barman, S. R.
REVIEW OF SCIENTIFIC INSTRUMENTS, 2011, 82 (09)
[2] High resolution electron energy loss spectroscopy of spin waves in ultra-thin film - The return of the adiabatic approximation?
Ibach, Harald
SURFACE SCIENCE, 2014, 630 : 301 - 310

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