1. SRC USERS MEETING AND WORKSHOP
The program for the 1998 SRC Users Meeting on Friday, Oct. 23 is taking
shape. Last minute suggestions can be sent to Cliff Olson
This year's SRC Workshop is on Spectromicroscopy, chaired by Gelsomina
"Pupa" De Stasio. It starts Friday evening, Oct. 23 and continues on to Sunday,
Oct. 25 with twenty international experts presenting spectromicroscopy techniques and
their use in chemical imaging of materials, cells, plus applications in environmental
chemistry. Examples are boron incorporation for neutron capture therapy of tumors, malaria
infection, DNA repair, the chemical state of metal contaminants in soil and roots, and
carbon in fossil wood, polymers and human bones.
Up-to-date information is available in the News section of the SRC Web
2. ALADDIN LAMP AWARD NOMINATIONS DUE SEPTEMBER 15
The Aladdin Lamp Award is awarded annually for the best student thesis
performed at the SRC. The '98 award will be presented at the Users Meeting on Friday Oct.
23. A complete application consists of:
1. A brief letter of nomination from the applicants advisor.
2. An extended abstract (4 page maximum, including figures), written by the applicant.
3. The applicants curriculum vitae including publications and works in progress.
4. Optional supporting material.
For further information and for submittal of the nomination contact:
Pam Layton, SRC
Aladdin Lamp Award
3731 Schneider Drive
Stoughton, WI 53589
3. EXTRA OPPORTUNITY FOR SUBMITTING BEAM TIME PROPOSALS: DUE AUG. 1
A second proposal submission date is being made available (Aug. 1,
1998), which provides an extra option for submitting beam time proposals in addition to
the familiar spring date (Feb. 1). To reduce the load on PI's and reviewers, while
maintaining flexibility in the scheduling, the duration of proposals will be extended from
12 to 18 months. Users who prefer the current system will be able to continue with the
previous 1 year cycle.
A Beamtime Request form can be obtained on line from the SRC Web site
It is also available as zipped Word file at that location. Request
forms for the Scienta analyzer and the CMA chamber are availabe at:
Submit proposals by Aug. 1, 1998 to:
Pam Layton, SRC
3731 Schneider Drive
Stoughton, WI 53589
4. WORD OF THE INFRARED BEAMLINE IS SPREADING
The infrared beamline at the SRC has been optimized in order to take
dvantage of the unique properties of using a synchrotron as a source of infrared
radiation. The extreme brightness of the beam compared to the standard glower source makes
it ideal for studies of samples which are small in size or for high-resolution spatial
mapping of samples. Word of these facilities at the SRC is getting around and several new
applications, most employing the use of the infrared microscope, have recently been
developed. One of these is the study of additive migration through a polymer film. Mapping
studies across the microtomed film using a conventional source were previously diffraction
limited to a slit aperture of about 20 micrometers. Measurements using a 4 micrometer
aperture were easily obtained using the infrared beamline. Other examples include
preliminary mapping of plaque material which builds up on the brain tissue of
Alzheimers patients and surface studies of adsorbate monolayers on cadmium telluride
Coming in the not too distant future will be a branch line dedicated to
far-infrared (below 400 cm-1, 25 micrometer) studies, combined with UV spectroscopy for
5. NEW BEAM LINES
The Canadian spherical grating monochromator (SGM) has seen its first
light all the way through. The optical elements are installed and aligned and are
currently undergoing a bakeout and conditioning. This new beam line operates in the photon
energy range from 120 to 1000 eV with a resolving power of 4000. Initially, only one of
the three planned gratings is installed, covering photon energies from 250 to 600 eV.
Brian Yates and Greg Retzlaff from the Canadian group, together with Dan Wallace and Greg
Rogers from the SRC have been working on this project and can be contacted for details.
A new undulator beam line for high-resolution spectroscopy of valence
states is nearing its completion. Under the coordination of Greg Rogers, an
electromagnetic undulator and the first part of the beamline were installed earlier this
year, including two beam position monitors and a pinhole assembly. These diagnostics have
been used to characterize the undulator and determine the position of the undulator beam.
This work is now finished and soon the first optical component, a water cooled actively
bent cylinder, will be put in place and tested. Recently, the high-resolution 4m normal
incidence monochromator (NIM) arrived from McPherson. It has been mounted in its position
and is currently being tested. This project is a joint, NSF-funded effort involving SRC
and several users with Juan Carlos Campuzano (University of Illinois-Chicago) as Principal
Investigator. The beam line covers the energy range from 6 to 50 eV with a resolving power
up to 3 x 10^4, and throughput up to 3 x 10^11 photons/sec. The completed line will be
turned over to users early in '99. A picture of the work in progress can be found on the
SRC Web page at:
An extra grating has been ordered for the HERMON monochromator, which
will extend its spectral capabilities to the very wide range from 63 to 1300 eV. It covers
the sharpest core levels of all elements, which makes it particularly useful for
spectromicroscopy and magnetic circular dichroism (MCD) experiments. Expected delivery is
Spring '99. For details contact Mark Bissen.