{HEAD ~ The sensor} 3, wherein {TAIL ~ the detection head} further comprises second laser means for heating the sample to volatilize the sample 
wherein
{ HEAD ~ The sensor } 3 , wherein { TAIL ~ the detection head } further comprises second laser means for heating the sample to volatilize the sample
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH