Electron momentum distribution of terbium by compton scattering technique

被引：6
|
作者：
Ahuja, BL [1 ]
Malhotra, H [1 ]
Sharma, M [1 ]
机构：
[1] ML Sukhadia Univ, Coll Sci, Dept Phys, Udaipur 313001, Rajasthan, India
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 2004年 / 59卷 / 12期
关键词：
compton profile; electron momentum density; electron-electron correlation effects; cohesive energy; rare-earth metals;
D O I：
10.1515/zna-2004-1206
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present the experimental Compton profile of polycrystalline terbium, using 661.65 keV gamma-rays, emitted by 20 Ci Cs-137. In the absence of band structure calculations, theoretical computations have been made using renormalised-free-atom (RFA) and free electron based profiles. It is seen that the RFA results with e(-)-e(-) correlation correction agree relatively better with the experiment. The data are interpreted in terms of spd-f hybridization in the valence state of terbium. From the RFA profile, we have also derived the cohesive energy of terbium, which is compared with other band structures and experimental investigations.
引用
收藏
页码：927 / 932
页数：6
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