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Beamline 9.0.2

Chemical Reaction Dynamics, Photochemistry, High-Resolution Photoelectron and Photoionization Spectroscopy, Photoelectron and Photoionization Imaging and Spectroscopy

Operational	Now
Source characteristics	10-cm-period undulator (U10) (fundamental)
Energy range	5 - 30 eV
Monochromator	See endstation tables
Endstations	Crossed molecular beam Molecular-beam photoelectron/photoion imaging and spectroscopy Molecular-beam photoelectron/photoion spectroscopy

Endstation	Crossed molecular beam
Characteristics	Designed for photofragmentation spectroscopy and reactive scattering; two rotatable molecular-beam sources
Monochromator	None
Calculated flux (1.9 GeV, 400 mA)	~10¹⁶ photons/s/2.5%BW
Resolving power (E/DE)	40
Detectors	Time-of-flight spectroscopy by quadrupole mass analyzer
Spot size at sample (calculated)	170 (h) x 50 (v) µm
Samples
Format	Gas sample
Preparation	Molecular beam, seeded in rare gas
Sample environment	Vacuum ~10^-6 Torr
Experimental techniques	Photofragmentation spectroscopy, reactive scattering
Local contact/spokesperson	Name: Tomas Baer Affiliation: Advanced Light Source, Berkeley Lab Phone: (510) 486-4754 Fax: (510) 486-5311 Email: tbaer@lbl.gov

Endstation	Molecular-beam photoelectron/photoion imaging and spectroscopy
Characteristics	Multipurpose design for photoion and photoelectron imaging and photoelectron/photoion coincidence experiments
Monochromator	Off-plane Eagle
Calculated flux (1.9 GeV, 400 mA)	~10¹⁴ photons/s/0.1%BW
Resolving power (E/DE)	1,000
Detectors	Time-of-flight 2-D position-sensitive detectors
Spot size at sample (calculated)	300 (h) x 1000 (v) µm
Samples
Format	Gas sample
Preparation	Molecular beam, seeded in rare gas Laser ablation source Laser photolysis source Plasma discharge
Sample environment	Vacuum ~10^-5 Torr
Scientific applications	Spectroscopy and dynamics of radicals, metastable, and other novel species
Local contact	Name: Darcy Peterka Phone: (510) 495-2207 Fax: (510) 486-5311 Email: dspeterka@lbl.gov
Spokesperson	Name: Tomas Baer Affiliation: Advanced Light Source, Berkeley Lab Phone: (510) 486-4754 Fax: (510) 486-5311 Email: tbaer@lbl.gov

Endstation	Molecular-beam photoelectron/photoion spectroscopy
Characteristics	Multipurpose design for high-resolution photoelectron spectroscopy and photoelectron/photoion coincidence experiments
Monochromator	Off-plane Eagle
Calculated flux (1.9 GeV, 400 mA)	~10¹¹ photons/s/0.01%BW
Resolving power (E/DE)	70,000
Detectors	Time-of-flight and quadrupole ion and pulsed-field ionization electron detector
Spot size at sample (calculated)	360 (h) x 240 (v) µm
Samples
Format	Gas sample
Preparation	Molecular beam, seeded in rare gas
Sample environment	Vacuum ~10^-6 Torr
Experimental techniques	Pulsed-field ionization photoelectron spectroscopy, threshold photoelectron/photoion coincidence
Local contact	Name: Tomas Baer Phone: (510) 486-4754 Fax: (510) 486-5311 Email: tbaer@lbl.gov
Spokesperson	Name: Cheuk Ng Affiliation: Iowa State University Phone: (515) 294-4225 Fax: (515) 294-5825 Email: cyng@ameslab.gov

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