Electron Momentum Distribution Mapping of Trans-Stilbene Projected to [101] by Positron 2D-ACAR

被引：2

作者：

Selvakumar, S. ^{[1
,2
,3
]}

Sivaji, K. ^{[1
]}

Smith, S. V. ^{[2
,3
]}

机构：

[1] Univ Madras, Dept Nucl Phys, Ctr Mat Sci, Guindy Campus, Madras 600025, Tamil Nadu, India

[2] Australian Natl Univ, Res Sch Phys & Engn, Ctr Excellence Antimatter Matter Studies, Canberra, ACT 0200, Australia

[3] Australian Nucl Sci & Technol Org, Ctr Excellence Antimatter Matter Studies, Kirrawee, Australia

来源：

POSITRON STUDIES OF DEFECTS 2011 | 2012年 / 35卷

基金：

澳大利亚研究理事会;

关键词：

Positron Annihilation; 2D-ACAR; Organic crystal; VERTICAL BRIDGMAN TECHNIQUE; SINGLE-CRYSTAL; MOLECULAR-CRYSTALS; ANNIHILATION; GROWTH;

D O I：

10.1016/j.phpro.2012.06.028

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Electron momentum distribution (EMD) on trans-stilbene single crystal projected along [101] direction has been studied by using positron two dimensional -angular correlation of annihilation radiation (2D-ACAR). The projected EMD is explained with respect to the molecular arrangement in the plane. The EMD features reflected the delocalized electronic states in [101] direction. The results of EMD mapping did not show a characteristic ellipsoidal distribution at lower momentum region (LMR) as observed in trans-stilbene projected to [010] direction at room temperature. The LMR region exhibits a hexagonal contour projected to [101] direction. (c) 2012 The Authors Published by Elsevier B.V. Selection and/or peer-review under responsibility of Organizing Committee.

引用

页码：157 / 161

页数：5

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