Validations of Time-Resolved X-Ray Emissions Spectroscopy for Analysis of Mn-Based Natural and Artifical Sunlight-to-Energy Assemblies
- Purdue Univ., West Lafayette, IN (United States)
The goal of this project was to demonstrate time resolved analysis of the electronic structure dynamic using techniques of miniature X-ray emission spectrometers. The focus was on development of easy/fast to set up, portable, cost efficient, good energy resolution, good sensitivity, dispersive (particularly suitable for time resolved analysis) system. These mile stones were achieved and miniXES spectrometer for the Mn Kβ range was reported. Contrary to pointby- point detection, the miniXES setup allows a complete emission spectrum to be recorded following each laser excitation, Fig. 1. miniXES system compares favorably with other realization of a dispersive XES spectrometer with cylindrically bent analyzers. Setup reported by others has disadvantages of high cost (which limits its re-creation by other researchers) and lower (0.55 eV) energy resolution (at 6490 eV). The energy resolution of our miniXES system is 0.30 eV. Additional advantage of portability allowed us to use miniXES at multiple beamlines at APS (ANL): 20-ID, 14-ID and 7-ID. Moreover, in March 2013 PI transported the Mn Kβ spectrometer (which fits into a small hand luggage bag) to SLS (Switzerland) and set it up there for the TR-XES beamtime. Our spectrometer works with 2D-PSD (Pilatus-100) which is a standard detector available via equipment pool at synchrotron sources.
- Research Organization:
- Purdue Univ., West Lafayette, IN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- SC0008676
- OSTI ID:
- 1169448
- Report Number(s):
- DOE-PURDUE-0008676; 106032
- Country of Publication:
- United States
- Language:
- English
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