Find people (by last name)


Advanced search

X19A External Homepage

Beamline X19A

General Information

Source Type
Bending Magnet

Status
Operational

General User Beamtime
50%

Energy Range Category
Hard X-Ray (1-50 keV)

Energy Range
2.1-17 keV

Beamline Type
Facility Beamline

Technique(s)
X-ray scattering, resonant
X-ray absorption spectroscopy
X-ray absorption spectroscopy, extended fine structure
X-ray absorption spectroscopy, fine structure
X-ray absorption spectroscopy, near edge fine structure
X-ray absorption spectroscopy, near edge structure

Institution(s)
Brookhaven National Laboratory Chemistry
Brookhaven National Laboratory Electrochemistry
NSLS
ORNL
UOP LLC
University of Delaware
Yeshiva University

Research Types
X-ray absorption spectroscopy: EXAFS and XANES in biology, chemistry, physics, geology and environmental sciences, resonant x-ray diffraction of free standing liquid crystal films.

Contact Information

Spokesperson The person from each beamline who acts as a contact point between the beamline management and NSLS administration. Contact for questions about the beamline scientific program, experimental capabilities, and beamline management.
Steven Ehrlich, Brookhaven National Laboratory, ehrlich@bnl.gov, 344-7862

Local Contact The beamline staff member who is typically responsible for overseeing the daily operation and maintenance of the beamline. Contact for questions about beamline instrumentation, experimental details, and training.
Syed Khalid, Brookhaven National Laboratory, khalid@bnl.gov, 344-7496
Nebojsa Marinkovic, University of Delaware, marinkov@bnl.gov, 6313443808

Beamtime Scheduler The beamline staff member responsible for coordination of beamline schedule every trimester. Contact for questions about beamtime scheduling.
Syed Khalid, Brookhaven National Laboratory, khalid@bnl.gov, 344-7496

Beamline Phone
631-344-5619

Instrumentation

Beamline Characteristics

Energy Range Mono Crystal or Grating Resolution (ΔE/E) Flux Spot Size (mm) Total Angular Acceptance (mrad)
2.1 – 16.5 keV Si(111) 2 x 10-4 5 x 1010 ph/sec (@ 2.5 keV); 1 x 1011 ph/sec (@ 10 keV) 2H x 1V 3

Source Type
Bending magnet

Optical System
Mirror 1: Spherical (collimating) mirror, Rh-coated glass, 3 mrad incident angle.

Monochromator: Double-crystal fixed-exit monochromator with feedback on second crystal.

Mirror 2: Toroidal (focusing) mirror, Rh-coated glass.

Be window: 10 µm thin Be-window.

Experimental Apparatus
He-purged sample-chamber with Fluorescence detector (Canberra PIPS-detector) inside chamber; Closed-cycle cryostat with special chamber to mount PIPS-detector inside vacuum.

Computer System Hardware & Software
Pentium PC, Windows operating system, Labview XDAC-software to operate beamline and to collect data; CAMAC-crate; Computer for data analysis (WinXas, Athena, Artemis, FEFF) available.

Links