The phonon density of states measured with synchrotron radiation and nuclear resonances.

Sturhahn, W. ; Hu, M. ; Shastri, S. ; Toellner, T.

Argonne National Laboratory

关键词: Advanced Photon Source;    Educational Tools;    Synchrotron Radiation;    Vibrational States;    Phonons;   

DOI  :  10.2172/781262
RP-ID  :  ANL/APS/TB-40
RP-ID  :  W-31-109-ENG-38
RP-ID  :  781262

美国|英语

来源: UNT Digital Library

【 摘 要 】

In this experiment, we will use synchrotron radiation to measure the density of states of vibrational excitations (phonons.) Each group of students will conduct an experiment at sector 3-ID of the Advanced Photon Source, the nation's premier synchrotron radiation facility. We provide one support staff per group, i.e., Drs. Michael Hu, Sarvjit Shastri, Wolfgang Sturhahn, and Tom Toellner will help their group to perform the experiment and interpret the data. After data collection (1-2 h per group), the remaining time will be spent with evaluation and interpretation. In addition to your own data, we provide similar sets of data. Computer hardware (iMac running as X-terminals) and software for data manipulation will be provided. It is important that you understand the basic principles of the experimental method. Therefore we strongly recommend that you read the next section and the attached article Phonon Density of States Measured by Inelastic Nuclear Resonant Scattering. You are expected to use this description to familiarize yourself with the experimental setup and its individual components before the start of the experiment. You should be able to solve at least 75% of the quiz correctly. If you have particular questions or a general problem in understanding this document, please contact Dr. W. Sturhahn, Bldg. 431, Rm. D007, tel. 0163.