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Beamline 9.0.2

Chemical Dynamics

Operational	Now
Source characteristics	10-cm-period undulator (U10) (fundamental)
Energy range	5-30 eV
Undulator beam	White beam (straight undulator beam)
Calculated flux (1.9 GeV, 400 mA)	10¹⁶ photons/s/2.5%BW
Spot size at sample	400 (h) x 350 (v) µm
Monochromator #1	3-m Off-plane Eagle
Calculated flux (1.9 GeV, 400 mA)	10¹⁴ photons/s/0.1%BW
Spot size at sample	170 (h) x 50 (v) µm
Monochromator #2	3-m Off-plane Eagle
Calculated flux (1.9 GeV, 400 mA)	10¹⁴ photons/s/0.1%BW
Spot size at sample	560 (h) x 350 (v) µm
Endstations	Molecular-beam photoelectron/photoion spectroscopy Molecular-beam photoelectron/photoion imaging and spectroscopy Flame chamber Ablation chamber Aerosol chamber Kinetics chamber
Local contact	Musa Ahmed Phone: (510) 486-6355 Fax: (510) 486-5311
Beamline Director	Stephen Leone Affiliation: Univ. of California, Berkeley Phone: (510) 486-4754 Fax: (510) 495-2690
Beamline phone number	(510) 495-2092

Endstation	Molecular-beam photoelectron/photoion imaging and spectroscopy
Characteristics	Multipurpose design for photoion and photoelectron imaging and photoelectron/photoion coincidence experiments
Detectors	Time-of-flight 2-D position-sensitive detectors
Samples
Format	Gas sample
Preparation	Molecular beam, seeded in rare gas Laser ablation source Laser photolysis source Plasma discharge Cryogenic nozzle
Sample environment	Vacuum ~10^-5 Torr
Scientific applications	Spectroscopy and dynamics of clusters, radicals, metastable, and other novel species; fundamental understanding of excitation and relaxation processes in finite-sized many-body systems
Local contact	Musa Ahmed Phone: (510) 486-6355 Fax: (510) 486-5311

Endstation	Flame chamber
Characteristics	Low-pressure laminar-flow burner coupled to differentially pumped source and photoionization chamber
Detectors	Time-of-flight mass spectrometer
Samples
Format	Gas sample or liquid fuels
Preparation	Molecular beam expansion subsequent to burning in low-pressure flame
Sample environment	Vacuum ~10^-4 Torr
Scientific applications	Detailed studies of hydrocarbon- and nitrogen-containing flames
Local contact	Musa Ahmed Phone: (510) 486-6355 Fax: (510) 486-5311
Spokesperson	Terry Cool Affiliation: Cornell University Phone: (607) 255-4191 Fax: (607) 255-7658

Endstation	Ablation chamber
Characteristics	Designed for laser ablation of solids; easily adaptable for other source configurations
Detectors	Time-of-flight and quadrupole mass spectrometer
Samples
Format	Solid or gas
Preparation	Molecular beam, seeded in rare gas
Sample environment	Vacuum ~10^-6 Torr
Scientific applications	Cluster generation and characterization, photoionization dynamics of species of combustion and interstellar importance, biomolecule detection and ionization
Local contact/spokesperson	Musa Ahmed Phone: (510) 486-6355 Fax: (510) 486-5311

Endstation	Aerosol chamber
Characteristics	Designed for the study of submicron aerosols and other nanoparticles
Detectors	Twin laser and VUV light scattering; time-of-flight and quadrupole mass spectrometer and photoelectron imaging
Samples
Format	Solid, liquid, or gas
Preparation	Molecular beam
Sample environment	Vacuum ~10^-6 Torr
Scientific applications	Machine for the detection and ionization of submicron aerosol particles and the substrate-free study of all nanoparticles
Local contact/spokesperson	Musa Ahmed Phone: (510) 486-6355 Fax: (510) 486-5311

Endstation	Kinetics chamber
Characteristics	Time-resolved kinetics
Detectors	Combination multiplexing electrostatic and magnetic mass spectrometer
Samples
Format	Gas
Preparation	Low-pressure flow tube
Sample environment	Vacuum ~10^-10 Torr
Scientific applications	Novel machine for time-resolved kinetics
Local contact/spokesperson	Musa Ahmed Affiliation: Chemical Sciences Division, Berkeley Lab Phone: (510) 486-6355 Fax: (510) 486-5311

More information about this beamline is available on the Chemical Dynamics Web page.

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