Evidence for Efficient Pathway to Produce Slow Electrons by Ground-state Dication in Clusters

30th International Conference on Photonic, Electronic, and Atomic Collisions

You, Daehyun^1,2 ; Fukuzawa, Hironobu^1,2 ; Sakakibara, Yuta^1,2 ; Takanashi, Tsukasa^1,2 ; Ito, Yuta^1,2 ; Maliyar, Gianluigi G.^1,2 ; Motomura, Koji^1,2 ; Nagaya, Kiyonobu^2,3 ; Nishiyama, Toshiyuki^2,3 ; Asa, Kazuki^2,3 ; Sato, Yuhiro^2,3 ; Saito, Norio^2,4 ; Oura, Masaki^2 ; Schöffler, Markus^2,5 ; Kastirke, Gregor^5 ; Hergenhahn, Uwe^6,7 ; Stumpf, Vasili^8 ; Gohkberg, Kirill^8 ; Kuleff, Alexander I.^8 ; Cederbaum, Lorenz S.^8 ; Ueda, Kiyoshi^1,2

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai

980-8577, Japan^1

RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo

679-5148, Japan^2

Department of Physics, Kyoto University, Kyoto

606-8502, Japan^3

National Metrology Institute of Japan, AIST, Tsukuba

305-8568, Japan^4

Institute for Nuclear Physics, Johann Wolfgang Goethe University Frankfurt, Frankfurt

60438, Germany^5

Leibniz Institute of Surface Modification, Leipzig

04318, Germany^6

Max-Planck-Institute for Plasma Physics, Greifswald

17491, Germany^7

Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Heidelberg

69120, Germany^8

关键词: Auger decays;    Electron transfer;    Experimental evidence;    Free electron;    Inner-shell ionization;    Mixed clusters;    Multiply charged;    Slow electrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/4/032004/pdf
DOI  :  10.1088/1742-6596/875/4/032004

来源: IOP

【 摘 要 】

We present an experimental evidence for a so-far unobserved, but potentially very important step relaxation cascades following inner-shell ionization of a composite system: Multiply charged ionic states created after Auger decay may be neutralized by electron transfer from a neighboring species, producing at the same time a low-energy free electron. This electron transfer-mediated decay (ETMD) called process is effective even after Auger decay into the dicationic ground state. Here, we report the ETMD of Ne2+produced after Ne 1s photoionization in Ne-Kr mixed clusters.