DYNAMICAL TEST OF DAVYDOV-TYPE SOLITONS IN ACETANILIDE USING A PICOSECOND FREE-ELECTRON LASER

被引：48

作者：

FANN, W

ROTHBERG, L

ROBERSON, M

BENSON, S

MADEY, J

ETEMAD, S

AUSTIN, R

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

[2] PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544

[3] DUKE UNIV,DEPT PHYS,DURHAM,NC 27706

[4] BELLCORE,RED BANK,NJ 07701

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.64.607

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Picosecond infrared excitation experiments on acetanilide, an -helix protein analog, indicate that the anomalous 1650-cm-1 band which appears on cooling of acetanilide crystals persists for at least several microseconds following rapid pulsed heating. The ground-state recovery time is 155 psec, consistent with a conventional mode strongly coupled to the phonon bath. We therefore suggest that the unusual temperature-dependent spectroscopy of acetanilide can be accounted for by slightly nondegenerate hydrogen atom configurations in the crystal. © 1990 The American Physical Society.

引用

页码：607 / 610

页数：4

共 20 条

[1] INFRA-RED SPECTRUM AND DICHROISM OF CRYSTALLINE ACETANILIDE [J].