Mass spec à la laser· ———^«—«————
The Leybold-Heraeus L A M M A 1000 m a s s s p e c t r o m e t e r for solids significantly a d v a n c e s your analytical and research technology. The n e w perspective. L A M M A 1000 is a c o n s e q u e n t n o c o m p r o m i s e d e v e l o p m e n t of the successful a n d well p r o v e n L A M M A 500. T h e L A M M A 1000 o p e n s the vast field of bulk solid s a m p l e s to Laser M i c r o p r o b e M a s s Analyzer by operating in t h e incident laser irradiation m o d e . S a m p l e s as large as 130 m m in d i a m e ter of almost a n y s h a p e m a y b e introd u c e d a n d subjected to micro area analysis w i t h a lateral resolution as small as 5 μτη. A single laser pulse typically generates a crater of some frac tions of a / i m in d e p t h . Several s h o t s at t h e s a m e spot result in a r o u g h d e p t h profile (Layer by Layer Analysis). After loading, the s a m p l e is o b s e r v e d in situ t h r o u g h a powerful Light Microscope. Both the observation a n d ion extraction optics are arranged p e r p e n d i c u l a r to the sample e n s u r i n g g o o d i m a g e quality a n d high detection sensitivity.
T h e h i g h p o w e r p u l s e d laser b e a m is focused o n t o t h e sample d o w n to a d i a m e t e r of a b o u t 3 μ,ιη by a large w o r k i n g distance objective. By the in teraction of UV laser light ( λ =265 n m ) a n d m a t t e r , positive a n d negative ions are g e n e r a t e d w h i c h are m a s s analyzed b y t h e T O F m a s s spectrometer. A key feature is the continuously variable laser intensity w h i c h permits control of the total ion intensity a n d molecular fragmentation over a w i d e range. L A M M A 1000 utilizes a transient recorder to o u t p u t signals to either a strip chart recorder or a data system. A l t h o u g h t h e s e operating principles are simplified, a n d u n d e r s t a t e d , it's o b v i o u s L A M M A 1000 h a s created a n e w d i m e n s i o n in analyses capabilities. A n a l y s e s results confirm that fact. • • • •
Lateral resolution Depth of analysis Detection limit Detectable concentration • Mass resolution (lead isotopes) • Speed of analysis • Sample changing time
< 5 micron — 0,1 micron
