( ( ( Abstract ( Energy loss ) ) ( of ( ( fast ( N ( ( -LRB- ( ( 4 S ) -RRB- ) ) atoms ) ) ) ( in ( ( a ( bath gas ) ) ( of ( N ( 2 molecules ) ) ) ) ) ) ) ) ( ( is ( investigated ( taking ( into ( ( ( account elastic ) and ) ( inelastic collisions ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Abstract) (NNP Energy) (NN loss)) (PP (IN of) (NP (NP (ADVP (RB fast)) (NNP N) (PRN (-LRB- -LRB-) (NP (QP (CD 4) (CD S))) (-RRB- -RRB-)) (NNS atoms)) (PP (IN in) (NP (NP (DT a) (NN bath) (NN gas)) (PP (IN of) (NP (NNP N) (CD 2) (NNS molecules)))))))) (VP (VBZ is) (VP (VBN investigated) (S (VP (VBG taking) (PP (IN into) (NP (NP (NN account) (NN elastic)) (CC and) (NP (JJ inelastic) (NNS collisions)))))))) (. .)))
Abstract Energy loss of fast N( 4 S) atoms in a bath gas of N 2 molecules is investigated taking into account elastic and inelastic collisions.
(ROOT (S (SBAR (IN Because) (S (NP (NNS collisions)) (VP (VBP are) (ADJP (JJ elastic))))) (, ,) (NP (NN energy)) (VP (MD can) (VP (VB be) (VP (VBN transferred) (PP (IN between) (NP (NNS molecules))) (PP (IN during) (NP (PRP them))))))))