| 日時: |
2008-06-12 10:00 - 11:00 |
| 場所: |
PF研究棟2階会議室 |
| 会議名: |
放射光セミナー「Photon Metrology using Synchrotron and FEL Radiation」 |
| 講演者: |
Dr. Mathias Richter (Physikalisch-Technische Bundesanstalt (PTB), Berlin, Germany) |
| 講演言語: |
英語 |
| URL: |
http://pfwww.kek.jp/pf-seminar/ |
| アブストラクト: |
For more than 25 years, Germany’s national metrology institute PTB uses synchrotron radiation of the storage rings BESSY I and BESSY II for fundamental and applied photon metrology in the spectral range from UV radiation to X-rays.
From 2008 till 2010, the activities in the lower photon energy range will be extended towards the infrared and terahertz regime and successively transferred to PTB’s Willy-Wien Laboratory and the new synchrotron radiation facility Metrology Light Source (MLS) which has started user operation in April 2008.
The work is based on (a) source-based radiometry using a storage ring as a primary source standard of calculable synchrotron radiation, (b) detector-based radiometry by means of cryogenic radiometers as primary detector standards, and (c) reflectometry. Current applications refer to the calibration of space instruments, testing optical components and materials within the framework of microlithography, standard-free X-ray fluorescence analysis, characterization of thin films, and photon diagnostics for X-ray lasers.
For the soft X-ray Free-electron LASer (FEL) in Hamburg FLASH, gas-monitor detectors for the online determination of FEL pulse energy were developed which are based on atomic photoionization.
In this context, also the limits of linear and the mechanisms of non-linear photon-matter interaction in the soft X-ray regime were studied on rare gases from a fundamental point of view.
The talk will give an overview of PTB’s activities in the field of photon metrology using synchrotron and FEL radiation. |
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