method analysi carbendazim peper has been develop use supercrit fluid extraction sfe sampl prepar combin laser desorpt reson enhanc multiphoton ioniz rempi coupl timeofflight mass spectrometri tofms detect the method allow analysi carbendazim pepper reduc sampl prepar step avoid matrix effect present classic hplc techniqu well problem relat labil properti carbendazim the detect limit obtain same order magnitud general employ hplc techniqu higher sensit easier sampl prepar

B.  Bescós

J. M. Orea

C.  Montero

A. González Ureña

A.  Valverde

A.  Aguilera 

Study of Agricultural Samples by Laser Desorption Coupled With Resonance-Enhanced Multiphoton
Ionization and Time-of-Flight Mass Spectrometry: Application to Carbendazim Analysis in Pepper

overview recent result obtain our group develop polymer solidst media incorpor either rhodamin coumarin dye present the effect laser perform rigid viscoelast properti polymer matrix has been investig lase effici similar those found ethanol solut improv photochem stabil compar obtain previous polymer materi were demonstr solid solut rhodamin rh6g appropri copolym formul 2hydroxyethyl methacryl hema methyl methacryl mma further improv photost were obtain when modifi rh6g molecul were copolymer hema mma when sampl new high homogen gain medium were place rotat system where laser medium scan continu way stabl laser output sign degrad after 500000 shot accomplish transvers pump 337 17 puls from 2 laser 2 repetit rate the effect laser oper differ polymer method dye concentr composit polymer matrix also investig coumarindop gain media condit were found signific improv both lase effici photost coumarin 540a c540a dope polymer matric insight main photodegrad mechan dye provid studi fluoresc lase properti number c540a solut increas viscos from liquid solut solid polym matrix

A.  Costela

I.  Garcia-Moreno

J. M. Figuera

F.  Amat-Guerri

R.  Sastre

Polymeric Matrices for Lasing Dyes: Recent Developments

high resolut dopplerfre laser techniqu use beam experi improv spectroscop descript complex diatom molecul the case tio consid here it implic reaction dynam studi it interest astrophys two absorpt band visibl have been analyz 3 3 1 0 1 1 0 0 owing accur wavenumb measur has been possibl extend analysi high rotat quantum number carri out detail spectroscop calcul they show care revisit tio electron structur necessari

R.  Vetter

P.  Luc

C.  Amiot

High Resolution Spectroscopy With Molecular Beams and Tunable Lasers

R. J. Donovan

Preface

multiphoton dissoci keten studi 2905 after irradi first excit singlet state two differ laser pulsewidth 4 10 analysi photofrag fluoresc spectra two time domain shed light mechan respons product observ 2 2 2 3 photofrag multiphoton ioniz cyclohexan induc visibl laser 581 it second harmon 2905 measur abov mention puls durat regim studi depend total ioniz signal pressur laser energi help clarifi role play giant reson molecul 84000 1 photoion process

M.  Castillejo

M.  Martín

R.  de Nalda

Nanosecond Versus, Picosecond Molecular Multiphoton Fragmentation of Ketene
and Cyclohexane

pure 3 mixtur substanc monoatom homonuclear diatom 2 2 2 polyatom gase 4 have been irradi tea 2 laser carbon13 enrich factor carbon13 select have been estim from mass spectrometr analysi undissoci 3 function excit wavelength fluenc temperatur pressur the irradi wavelength crucial paramet achiev enrich the natur ad gas also affect consider select best enrich achiev mixtur due it radicallik charact

J. I. del Barrio

R. Fernández Cézar

F. M. G.- Tablas

Carbon Isotope Selective Separation From MPD of CF3Br With a TEA CO2 Laser

zero kinet energi zeke spectroscopi reli electron produc through delay field ioniz narrow band high rydberg state which exist just below ioniz limit each ionic eigenst using uniqu properti weak bound stabl high rydberg state zeke state below ioniz limit rather than unbound state abov limit pes lead improv resolut more than two order magnitud sever differ type zeke experi each design probe format stabil state present here these experi were perform puls static electr field differ magnitud durat differ ion concentr the result indic enhanc zeke state decay increas electr field strength enhanc format stabil increas ion concentr strong interplay between field strength ion concentr zeke state format demonstr the strong influenc electr field ion concentr physic properti zeke state abov below classic ioniz threshold also demonstr through late time ten microsecond decay rate measur

A.  Held

E. W. Schlag

The Role of Electric Fields and Ion Concentrations in the Formation and Stabilization of High-n
Rydberg States

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New Trends in Laser Spectroscopy

Articles

Study of Agricultural Samples by Laser Desorption Coupled With Resonance-Enhanced Multiphoton Ionization and Time-of-Flight Mass Spectrometry: Application to Carbendazim Analysis in Pepper

Polymeric Matrices for Lasing Dyes: Recent Developments

High Resolution Spectroscopy With Molecular Beams and Tunable Lasers

Preface

Nanosecond Versus, Picosecond Molecular Multiphoton Fragmentation of Ketene and Cyclohexane

Carbon Isotope Selective Separation From MPD of CF₃Br With a TEA CO₂ Laser

The Role of Electric Fields and Ion Concentrations in the Formation and Stabilization of High-n Rydberg States