( ( A ( liquid nitrogen ) ) ( ( cooled ( ( mercury-cadmium-telluride ( ( -LRB- ( MCT -RRB- ) ) detector ) ) ( is ( used ( to ( ( convert ( ( IR energy ) ( between ( ( ( ( 750 and ) 4000 ) wavenumbers ) ( -LRB- ( cm-1 -RRB- ) ) ) ) ) ) ( into ( an ( electronic signal ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ liquid) (NN nitrogen)) (VP (VBD cooled) (SBAR (S (NP (JJ mercury-cadmium-telluride) (PRN (-LRB- -LRB-) (NP (NNP MCT)) (-RRB- -RRB-)) (NNS detector)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB convert) (NP (NP (NNP IR) (NN energy)) (PP (IN between) (NP (NP (QP (CD 750) (CC and) (CD 4000)) (NNS wavenumbers)) (PRN (-LRB- -LRB-) (ADJP (JJ cm-1)) (-RRB- -RRB-))))) (PP (IN into) (NP (DT an) (JJ electronic) (NN signal))))))))))) (. .)))
A liquid nitrogen cooled mercury-cadmium-telluride (MCT) detector is used to convert IR energy between 750 and 4000 wavenumbers (cm-1) into an electronic signal.
(ROOT (S (NP (NN Liquid) (NN nitrogen)) (VP (VBZ is) (VP (VBN used) (PP (IN for) (NP (NP (VBG cooling) (NNS detectors)) (PP (IN of) (NP (JJ infrared) (NNS telescopes))))))) (. .)))