CHARACTERIZATION OF GEOLOGICAL MATERIALS USING ION AND PHOTON BEAMS Page: 4 of 34
35 pagesView a full description of this book.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
charged particle to execute small deviations in the trajectory) came into use. The third generation
SR facilities are mainly based on inse-tion devices that offer the possibility of extremely high
brilliance sources with unique characteristics; wavelength tunability from the infrared to hard X-
rays, high degree of polarization and selectivity as well as source coherence. These X-ray sources
allow the development of experimental facilities with ultra-high sensitivity for chemical analysis.
Since the first experiments carried out at SPEAR (Stanford) to characterize geological samples,
many experimental stations were developed at SR facilities for this kind of research and geologists
joined the wide community of SR users. Table 5.1.1 presents the SR sources were mineral analysis
was reported.
Table 5.1.1
SR photon sources where mineral analysis was reported
Location Rin, (Inst.) Electron Energy Notes
(GeV)
Stanford (CA, USA) SPEAR 3-3 5 first generation
Ithaca (NY, USA) CHESS 5 5 first generation
Hamburg (Germany) HASYLAB 3 5 first generation
Orsay (France) DCI 1 8 first generation
Novosibirsk (FSI) VEPP-3 : 2 first generation
Daresby (UK) SRS 2 second generation
Tsukuba (Japan) KEK 2 5 second generation
Upton, NY NSLS 2 5 second generation
Berkeley, CA ALS (LBL) 1.5 third generation
Grenoble (France) ESRF 6 third generation
Trieste (Italy) ELETTRA 2.0 third generation
Hsinchu (Taiwan) SRRC 1 3 third generation
Argonne (IL, USA) APS 7 third generation
Here we briefly report on the world-wide commissioning of new SR facilities. In the following
sections we'll discuss the properties of SR and some X-ray fluorescence (XRF) experiments with
SR microbeams.
A hard X-ray source, the European Synchrotron Radiation Facility (ESRF), was successfully
commissioned in December 1992 at 100 mA current in multi-bunch mode with 12 hours lifetime.
Third generation hard X-ray sources are being constructed at the Argonne National Laboratory
(APS) and in Japan (Spring-8) [1].
The Advanced Light Source at the Lawrence Berkeley Laboratory has been commissioned in
1993 [2]. Since that time a 400 mA current was reached for multi-bunch mode. Undulator
fluorescence beam lines (2 to 10 keV) and bending magnet beam lines became available in 1994.
A high brightness VUV/soft X-ray synch-rotron radiation raciliy, ELETTR>A, 1.s -e--
commissioned recently in Triest. The instrumental and design parameters of the 2 GeV source
were reviewed by Walker [3].
A source with similar energy range is under construction in Moscow designed by the Siberian
group. Commissioning of the machine was scheduled for 1994 [4]. A few other sources planed for
basic and applied science are under construction or in the design stage [5, 6]. It is worth
mentioning that Helios, the compact source of Oxford Instruments is already installed at IBM's
AAced Lith.,gaphy Faci0;lity and .,s r :.in ..r ..ely since JanaryI n- r 49 1 [7 '].
In 1992 the Photon Factory celebrated the 10th anniversary of the 2.5 GeV storage rings where
on the 3 T superconducting wiggler line the critical photon energy is 20 keV [9].
5.1.2. Properties of synchrotron radiation
It has been known since Rdntgen's discovery that the acceleration of charged particles results in
the emission of electromagnetic ofitin Al.,r 4f'nfty ye-r atrr _ Eeri .,,7 .,.t-Pwrke
discovered that relativistic electrons orbiting in circular path emit very intense electromagnetic
radiation in the UV or X-ray energy range (synchrotron radiation).
218
Upcoming Pages
Here’s what’s next.
Search Inside
This book can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Book.
Torok, Sz. B.; Jones, K. W. & Tuniz, C. CHARACTERIZATION OF GEOLOGICAL MATERIALS USING ION AND PHOTON BEAMS, book, November 1998; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc707080/m1/4/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.