Remote pulsed laser Raman spectroscopy system for detecting water, ice, and hydrous minerals

被引:9
作者
Garcia, Christopher S. [1 ]
Abedin, M. Nurul [2 ]
Sharma, Shiv K. [3 ]
Misra, Anuparn K. [3 ]
Ismail, Syed [2 ]
Singh, Upendra N. [2 ]
Refaat, Tamer F. [1 ]
Elsayed-Ali, Hani E. [1 ]
Sandford, Steve P. [2 ]
机构
[1] Old Dominion Univ, Hampton Blvd, Norfolk, VA 23529 USA
[2] NASA, Langley Res Ctr, Hampton, VA 23681 USA
[3] Univ Hawaii, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA
来源
IMAGING SPECTROMETRY XI | 2006年 / 6302卷
关键词
Raman Spectroscopy; pulsed laser; ICCD; isopropanol; acetone; naphthalene; calcite; hydrous minerals; water; ice;
D O I
10.1117/12.680879
中图分类号
TB8 [摄影技术];
学科分类号
0804 ;
摘要
For exploration of planetary surfaces, detection of water and ice is of great interest in supporting existence of life on other planets. Therefore, a remote Raman spectroscopy system was demonstrated at NASA Langley Research Center in collaboration with the University of Hawaii for detecting ice-water and hydrous minerals on planetary surfaces. In this study, a 532 nm pulsed laser is utilized as an excitation source to allow detection in high background radiation conditions. The Raman scattered signal is collected by a 4-inch telescope positioned in front of a spectrograph. The Raman spectrum is analyzed using a spectrograph equipped with a holographic super notch filter to eliminate Rayleigh scattering, and a holographic transmission grating that simultaneously disperses two spectral tracks onto the detector for higher spectral range. To view the spectrum, the spectrograph is coupled to an intensified charge-coupled device (ICCD), which allows detection of very weak Stokes line. The ICCD is operated in gated mode to further suppress effects from background radiation and long-lived fluorescence. The sample is placed at 5.6 in from the telescope, and the laser is mounted on the telescope in a coaxial geometry to achieve maximum performance. The system was calibrated using the spectral lines of a Neon lamp source. To evaluate the system, Raman standard samples such as calcite, naphthalene, acetone, and isopropyl alcohol were analyzed. The Raman evaluation technique was used to analyze water, ice and other hydrous minerals and results from these species are presented.
引用
收藏
页数:7
相关论文
共 17 条
[1]   MAGNESIUM DICHLORIDE HEXAHYDRATE, MGCL2.6H2O, BY NEUTRON-DIFFRACTION [J].
AGRON, PA ;
BUSING, WR .
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1985, 41 (JAN) :8-10
[2]  
[Anonymous], NIST STANDARD REFERE
[3]   ON CRYSTAL CHEMISTRY OF SALT HYDRATES .3. DETERMINATION OF CRYSTAL STRUCTURE OF FESO4.7H20 (MELANTERITE) [J].
BAUR, WH .
ACTA CRYSTALLOGRAPHICA, 1964, 17 (09) :1167-&
[4]   Micro-Raman studies of gypsum in the temperature range between 9 K and 373 K [J].
Chio, CH ;
Sharma, SK ;
Muenow, DW .
AMERICAN MINERALOGIST, 2004, 89 (2-3) :390-395
[5]  
CHIO CH, 2006, IN PRESS J RAMAN SPE
[6]   REFINEMENT OF CRYSTAL-STRUCTURE OF GYPSUM CASO4.2H2O [J].
COLE, WF ;
LANCUCKI, CJ .
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1974, 30 (APR15) :921-929
[7]  
Colthup N. B., 1990, Introduction toInfrared and Raman Spectroscopy, P1, DOI [DOI 10.1016/B978-0-08-091740-5.50004-1, 10.1016/b978-0-08-091740-5.50004-1]
[8]  
FERRARO JR, 1994, INTRO RAMAN SPECTROS, P7
[9]  
*KAIS OPT SYST INC, HOL HOL TRANSM GRAT
[10]  
*KAIS OPT SYST INC, 1050 KAIS OPT SYST I