Trace detection of explosives with low vapor emissions by laser surface photofragmentation-fragment detection spectroscopy with an improved ionization probe

Applied Optics

Volumn 44, Issue 6, 2005, Pages 1084-1091

  Cabalo, Jerry ^a,b   Sausa, Rosario ^a  

^a U S ARMY RESEARCH LABORATORY   (United States)

^b EDGEWOOD CHEMICAL BIOLOGICAL CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CHEMILUMINESCENCE; GAS EMISSIONS; IONIZATION; PHOTOCHEMICAL REACTIONS; PROBES; SPECTROSCOPIC ANALYSIS; TOLUENE; ULTRAVIOLET RADIATION; VAPOR PRESSURE; VAPORS;

EXPLOSIVE DETECTION; IONIZATION PROBE; PHOTOFRAGMENTATION; TRINITROTOLUENE (TNT);

EXPLOSIVES;

EID: 14844322822     PISSN: 1559128X     EISSN: 15394522     Source Type: Journal    
DOI: 10.1364/AO.44.001084     Document Type: Article

References (29)

1. A. D. Usachev, T. S. Miller, J. P. Singh, F. Y. Yueh, P. R. Jang, and D. L. Monts, "Optical properties of gaseous 2,4,6-trinitrotoluene in the ultraviolet region," Appl. Spectrosc. 55, 125-129 (2001).
2. M. Todd, R. Provencal, T. Owano, B. Paldus, A. Kachanov, K. Vodopyanov, M. Hunter, S. Coy, J. Steinfeld, and J. Arnold, "Application of mid-infrared cavity-ringdown spectroscopy to trace explosives vapor detection using a broadly tunable (6-8 μm) optical parametric oscillator," Appl. Phys. B 75, 367-376 (2002).
3. G. M. Boudreaux, T. S. Miller, A. J. Kunefke, J. P. Singh, F. Yueh, and D. Monts, "Development of a photofragmentation laser-induced-fluorescence laser sensor for detection of 2,4,6-trinitrotoluene in soil and groundwater," Appl. Opt. 38, 1411-1417 (1999).
4. D. Heflinger, T. Arusi-Parpar, Y. Ron, and R. Lavi, "Application of a unique scheme for remote detection of explosives," Opt. Commun. 204, 327-331 (2002).
5. T. Arusi-Parpar, D. Heflinger, and R. Lavi, "Photodissociation followed by laser-induced fluorescence at atmospheric pressure and 24°C: a unique scheme for remote detection of explosives," Appl. Opt. 40, 6677-6681 (2001).
6. V. Swayambunathan, G. Singh, and R. Sausa, "Laser photofragmentation-fragment detection and pyrolysis laser-induced fluorescence studies on energetic materials," Appl. Opt. 38, 6447-6454 (1999).
7. V. Swayambunathan, R. Sausa, and G. Singh, "Investigations into trace detection of nitrocompounds by one-and two-color laser photofragmentation/fragment detection spectrometry," Appl. Spectrosc. 54, 651-658 (2000).
8. B. C. Dionne, D. P. Rounbehler, E. K. Achter, J. R. Hobbs, and D. H. Fine, "Vapor pressure of explosives," J. Energetic Mater. 4, 447-472 (1986), and references therein.
9. R. B. Cundal, T. F. Frank, and C. Colin, "Vapor pressure measurements of some organic high explosives," J. Chem. Soc. Faraday Trans. 1 74, 1339-1345 (1978).
10. J. M. Rosen and C. Dickinson, "Vapor pressures and heats of sublimation of some high melting organic explosives," J. Chem. Eng. Data 14, 120-124 (1969).
11. References 8-10 report the vapor pressure of HMX, RDX, and TNT. The vapor pressure of CL20 is not reported in the open literature: It is probably much less than that of RDX at room temperature based on its molecular structure.
12. T. B. Tang, M. M. Chaudhri, C. S. Rees, and S. J. Mullock, "Decomposition of solid explosives by laser irradiation - a mass-spectrometric study," J. Mater. Sci. 22, 1037-1044 (1987).
13. J. T. Dickinson, L. C. Jensen, D. L. Doering, and R. Lee, "Mass-spectroscopy study of products from exposure of cyclotrimethylene trinitramine single-crystals to KrF excimer laser-radiation," J. Appl. Phys. 67, 3641-3651 (1990).
14. J. Cabalo and R. Sausa, "Detection of hexahydro-1,3,5-trinitro-1,3, 5-triazine (RDX) by laser surface photofragmentation-fragment detection spectroscopy," Appl. Spectrosc. 57, 1196-1199 (2003), and references therein.
15. SIMION is an electrostatic lens analysis and design program developed originally by D. C. McGilvery at Latrobe University, Bundoora, Victoria, Australia (1977). SIMION 7.0 is a PC-based program developed by David Dahl of the Idaho National Engineering and Environmental Laboratory. Additional information can be found at http://www.simion.com/.
16. W. A. Schroeder, P. E. Wilcox, K. N. Trueblood, and A. O. Dekker, "Ultraviolet and visible absorption spectra in ethyl alcohol: data for certain nitric esters, nitramines, nitroalkylbenzenes, and derivatives of phenol, aniline, urea, carbamic acid, diphenylamine, carbazole, and triphenylamine," Anal. Chem. 23, 1740-1747 (1951).
17. M. J. Kamlet, H. G. Adolph, and J. C. Hoffsommer, "Steric enhancement of resonance. I. Absorption spectra of the alkyltrinitrobenzenes, " J. Am. Chem. Soc. 84, 3925-3928 (1962).
18. C. J. Wu and L. E. Fried, "Ab initio study of RDX decomposition mechanisms," J. Phys. Chem. A 101, 8675-8679 (1997).
19. M. M. Kuklja and A. B. Kunz, "Electronic structure of molecular crystals containing edge dislocations," J. Appl. Phys. 89, 4962-4970 (2001).
20. D. Chakraborty, R. P. Muller, S. Dasgupta, and W. A. Goddard III, "Mechanism for unimolecular decomposition of HMX (1,3,5,7-tetranitro-l,3,5, 7-tetrazocine), an ab initio study," J. Phys. Chem A 105, 1302-1314 (2001).
21. 2 bond strength of 38.6 kcal/mol. The error limit is plus or minus a few kilocalories per mole.
22. A. C. Gonzalez, C. W. Larson, D. F. McMillen, and D. M. Golden, "Mechanism of decomposition of nitroaromatics-laser-powered homogeneous pyrolysis of substituted nitrobenzenes," J. Phys. Chem. 89, 4809-4814 (1985).
23. C. Cheng, T. E. Kirkbridge, D. N. Batchelder, R. J. Lacey, and T. G. Sheldon, "In-situ detection and identification of trace explosives by Raman microscopy," J. Forensic Sci. 40, 31-37 (1995).
24. Y. Z. He, J. P. Cui, W. G. Mallard, and W. Tsang, "Homogeneous gas-phase formation and destruction of anthranil from o-nitrotoluene decomposition," J. Am. Chem. Soc. 110, 3754-3759 (1988).
25. D. G. Patil and T. B. Brill, "Thermal decomposition of energetic materials 53. Kinetics and mechanisms of thermolysis of hexanitrohexazaisowurtzitane," Combust. Flame 87, 145-151 (1991).
26. M. Geetha, U. R. Nair, D. B. Sarwade, G. M. Gore, S. N. Asthana, and H. Singh, "Studies on CL20: the most powerful high energy material," J. Therm. Anal. Cal. 73, 913-922 (2003).
27. 2 mixtures," Appl. Opt. 39, 2487-2495 (2000).
28. Y. Oyumi and T. B. Brill, "Thermal-decomposition of energetic materials 3. A high-rate, in situ, FTIR study of the thermolysis of RDX and HMX with pressure and heating rate as variables," Combust. Flame 62, 213-224 (1985).
29. P. E. Gongwer and T. B. Brill, "Thermal decomposition of energetic materials 73. The identity and temperature dependence of 'minor" products from flash-heated RDX," Combust. Flame 115, 417-423 (1998).