Deep ultraviolet Raman spectroscopy measurements have been performed at the German Aerospace Center (DLR) with aim of detecting traces (μg range) explosive precursors. In this study, a backscattering system was setup and optimized to detect urea, sodium perchlorate, ammonium nitrate, nitrate 60-cm short-range remote detection. The sample tested 264-nm laser excitation wavelength experimentally ...

An E-4-styrylpyridine derivative endowed with 18-crown-6 as a substituent (E-1) was prepared and evaluated in acetonitrile as a potential ditopic ligand for protonated amino acids. The interactions of E-1 with the protonated amino acid perchlorates, ClO(4)(-) H(3)N(+)(CH(2))(n)COOH (n = 2, 5 and 10, A2, A5 and A10, respectively), were studied by optical methods, (1)H NMR and mass spectroscopy. ...

Increased rocket motor performance is a major driver in the development of solid rocket propellant formulations for chemical propulsion systems. The use of increased operating pressure is an option to improve performance potentially without the cost of reformulation. A technique has been developed to obtain burning rate data across a range of pressures from ambient to 345 MPa. The technique com...