Hybrid beat in nuclear forward scattering of synchrotron radiation

被引：45

作者：

Shvyd'ko, YV ^{[1
]}

van Burck, U

Potzel, W

Schindelmann, P

Gerdau, E

Leupold, O

Metge, J

Ruter, HD

Smirnov, GV

机构：

[1] Univ Hamburg, Inst Expt Phys 2, D-22761 Hamburg, Germany

[2] Tech Univ Munchen Weihenstephan, Phys Dept E15, D-85748 Garching, Germany

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[4] RRC Kurchatov Inst, Moscow 123182, Russia

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.57.3552

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Asymmetric nuclear-resonance broadening, as originating, e.g., from magnetic-hyperfine-field distributions in magnetic alloys, has strong effects on the time evolution of nuclear forward scattering of synchrotron radiation. In thin samples of an Invar alloy, resonance broadening and the resulting dephasing in time cause a fast decay of the coherent scattering signal. In thick samples, the asymmetry of the broadening strongly affects dynamical scattering. Quantum beat and dynamical beat blend into a fast hybrid beat with thickness dependent period and field distribution sensitive modulation.

引用

页码：3552 / 3561

页数：10

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