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As of May 26, 2007 |
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for international journal X-Ray Spectrometry (John Wiley & Sons Ltd.) |
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| Sciences | |||
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X-ray reveals that metal-free carbon could become magnetic at room temperature (May 3, 2007) |
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For many years, the existence of magnetic carbon has remained an
enigma. Previous claims to have solved the mystery were subsequently
disproved when it was found that magnetic metals like iron, nickel, etc,
were probably present in the carbon samples. Recently, Dr. Ohldag
(Stanford Synchrotron Radiation Laboratory) and his colleagues have
shown that pure carbon can be made permanently magnetic at room
temperature after carrying out a series of careful measurements
including scanning transmission X-ray microscopy, X-ray magnetic
circular dichroism (XMCD), PIXE analysis (to check for contamination by
magnetic metals), AFM, and MFM etc. The team found that the magnetic
order originates only from the carbon
p-electron
system. For more information, see the paper, p-Electron
Ferromagnetism in Metal-Free Carbon Probed by Soft X-Ray Dichroism",
H. Ohldag et al., Phys. Rev. Lett., 98,187204 (2007).
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Coherent X-ray speckle pattern of antiferromagnets: First results (May 3, 2007) | |||
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Recently, some very interesting research on magnetic noise from
antiferromagnets has been published. Unlike ferromagnets, the
characteristics of which have been studied for many years,
antiferromagnets have remained a mystery because their internal
structure was too fine to be measured. Their internal order is on the
same scale as the wavelength of X-rays, and therefore, X-ray photon
correlation spectroscopy, which measures 'speckle' patterns, can give a
unique ‘fingerprint’ of a particular magnetic domain configuration. It
was found that the domain wall motion is thermally activated at
temperatures above 100 K, but not so at lower temperatures. For more
information, see the paper, "Direct measurement of
antiferromagnetic domain fluctuations", O. G. Shpyrko, et al., Nature
447, 68 (2007). | |||
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Towards attosecond - observation of electron tunnelling (April 5, 2007) |
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Atoms become ions when exposed to extremely intense light. The process
is predicted to occur via tunnelling through the binding potential that
is suppressed by the light field near the peaks of its oscillations.
Professor F. Krausz (Max Planck Institute of Quantum Optics in Garching,
Germany) and his collaborators recently reported the real-time
observation of this most elementary step in strong-field interactions,
i.e., light-induced electron tunnelling. The team used 250-attosecond
pulses of UV radiation, and confirmed theoretical predictions about the
tunneling process. It was also found that the process lasted for
several hundred attoseconds, depleting atomic-bound states. This would
suggest that the use of tunneling itself is feasible for probing
short-lived, transient states of atoms or molecules, e.g.,
multi-electron excitation (shake-up) and relaxation (cascaded Auger
decay) processes etc. For more information, see the paper, "Attosecond
real-time observation of electron tunnelling in atoms", M.
Uiberacker et al., Nature, 446, 627 (2007). |
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| Professional | |||
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Obituary - Theodore H. Maiman (May 5, 2007) |
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Theodore H. Maiman, the American physicist who made the first working
laser, died on March 5, 2007 at the age of 79 from systemic mastocytosis
in Vancouver, Canada, where he lived with his wife. Maiman's laser,
based on a synthetic ruby crystal grown by Dr. Ralph L. Hutcheson, was
first operated on 16 May 1960 at Hughes Research Laboratories in Malibu,
California. It is well-known that this breakthrough was based on the
idea of employing artificial rubies as the active medium for the laser
at a time when others were trying only various gases. Dr. Maiman would
have been aware of errors in their calculations. Another key point is
that he also used pulses of light to excite atoms in the ruby. This was
the ground-breaking first step to the modern pulse laser. Although his
paper on this wonderful discovery was unfortunately mistakenly rejected
by Physical Review Letters, the shortened version was published
in Nature (“Stimulated Optical Radiation in Ruby”,
T. H. Maiman, Nature, 187, 493 (1960)).
Dr. Maiman received the Japan Prize in 1987. He is the author of a
book entitled “The Laser Odyssey” (Laser Press, 2000). The New
York Times (May 11, 2007) carries an obituary written by Douglas Martin. |
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Nanocenter opened at Brookhaven National Laboratory (May 1, 2007) |
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The Center for Functional Nanomaterials (CFN) has opened at Brookhaven
National Laboratory, United States. The CFN is dedicated to the
fabrication and study of nanoscale materials, with an emphasis on
atomic-level tailoring to achieve desired properties and functions. The
science at the CFN is organized around three scientific themes; (i)
nanocatalysis, (ii) biological and soft nanomaterials, and (iii)
electronic nanomaterials. The official opening ceremony will be held on
May 21. For more information, visit
http://www.bnl.gov/cfn/ |
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First set of experiments at SOLEIL (March 22, 2007) |
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Recently, at the new French synchrotron facility, SOLEIL, the first
experimental results have been obtained in spite of the technically
difficult situation that is still preventing the beamline from
functioning under normal operating conditions. The absorption
spectroscopic experiments were done on a kidney stone, which is an
agglomerate of many different nanometer-scale crystalline materials.
For more information on the recent status of SOLEIL, visit
http://www.synchrotron-soleil.fr/ |
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2007 Benjamin Franklin Medal (March 12, 2007) |
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The 2007 Benjamin Franklin Medals recipients have been announced as
follows; Chemistry, Klaus Biemann (Professor Emeritus, Department of
Chemistry, Massachusetts Institute of Technology), Earth and
Environmental Science, Steven W. Squyres (Goldwin Smith Professor of
Astronomy, Cornell University), Electrical Engineering, Robert H.
Dennard (IBM Fellow, Silicon Technology Department, IBM Research
Division), Life Science, Nancy S. Wexler (Higgins Professor of
Neuropsychology, College of Physicians and Surgeons of Columbia
University), Materials Engineering, Merton C. Flemings (Director,
Lemelson Program-MIT Program, Massachusetts Institute of Technology),
Physics, Yoji Totsuka (Former Director-General High Energy Accelerator
Research Organization, Japan), and Arthur McDonald (Director, Sudbury
Neutrino Observatory Institute, Queen's University, Canada). For more
information on Benjamin Franklin Medals, visit
http://www.fi.edu/tfi/exhibits/bower/ |
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| New Products | |||
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Shimadzu releases SMX-3000micro - an X-ray inspection system with a flat-panel detector (May 9, 2007) |
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Shimazu has announced the release of the SMX-3000micro, an X-ray
inspection system suitable for the auto industry, equipped with a 130 kV
micro focus X-ray source and a flat-panel detector. It costs 19,600,000
JPY. For further information,
Phone: +81-3-3219-5641, Fax:
+81-3-3219-5710,
imdsci05@shimadzu.co.jp | |||
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Agilent unveils in-line 3D X-ray inspection system (April 23, 2007) |
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Agilent Technologies Inc. has announced the release of the Agilent
Medalist x6000, a new in-line 3D X-ray inspection system for the
detection of printed circuit board assembly solder and manufacturing
assembly defects. Throughput has been improved to almost double that of
the previous machine. Product photos are available at
http://www.agilent.com/find/x6000_images. For further information,
contact Janet Smith, Phone: +1-970-679-5397,
janet_smith@agilent.com |
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JEOL releases JSX-3100RII - an energy-dispersive XRF analyzer with liquid nitrogen-free system (April 23, 2007) |
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JEOL Ltd. has announced the release of the JSX-3100RII as a successor to
the JSX-3100R, an energy-dispersive XRF analyzer distributed as a
solution for screening materials in order to meet the RoHS Directive.
The main advantage of the JSX-3100RII is its electronic cooling system,
which means that liquid nitrogen is no longer required. The new product
costs 12,300,000 JPY. For further information, contact JEOL Ltd., 1-2,
Musashino 3-chome Akishima, Tokyo 196-8558, Japan, Phone:
+81-42-543-1111, Fax +81-42-546-3353,
http://www.jeol.com |
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Rigaku announces ultra-bright microfocus X-ray source for structural biology (March 28, 2007) |
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Rigaku Americas Corporation has announced the introduction of the Rigaku
FR-E+ SuperBrightTM, a microfocus rotating anode X-ray source
for structural biology. The focus size is 70μm×70μm, and the flux
intensity is 1.6×1011 photons/mm2/sec, almost
twice that of rival instruments. The X-ray source is particularly
suitable for the tiny crystals typically encountered in current
structural biology research. For high-throughput phasing applications,
several dual wavelength configurations, including a Cu/Cr configuration,
are available. Other technical details can be found at
http://www.rigaku.com/generators/fre-plus.html For further
information, contact Joseph D. Ferrara, Phone:+1- 281-362-2300,
joseph.ferrara@rigaku.com |
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| Corporate | |||
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CANBERRA subsidiary opens in Sweden (May 1, 2007) |
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CANBERRA has announced the creation of a subsidiary in Sweden, by
integrating the former Laborel employees and Uppsala premises in the new
company. For further information, contact the CANBERRA Sweden team,
Kungsgatan 107 - SE-753 18 Uppsala, Sweden, Phone: +46 18 14 83 00, Fax
: +46 18 14 83 01,
info.se@canberra.com |
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Oxford Instruments receives Queen’s Award (April 21, 2007) |
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Oxford Instruments has been awarded The Queen’s Award for Enterprise for
the development of INCADryCool, a liquid nitrogen-free EDS X-ray
detector. Technical details of INCADryCool are available at the
following Web page,
http://www.oxford-instruments.co.uk/wps/wcm/resources/file/ebf5250f4189310/INCADryCool_brochure.pdf |
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Willis and Duncan XRF course moves to PANalytical (April 19, 2007) |
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PANalytical has acquired the rights to the renowned 'Willis & Duncan'
course, a long-established education and training program for advanced
X-ray fluorescence analysis. This famous course has been organized by
Professors James Willis and Andy Duncan since 1974 at the University of
Cape Town, South Africa. For further information, Phone:
+31-546-534444, Fax: +31-546-534592,
info@panalytical.com,
http://www.panalytical.com |
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XOS to directly market SINDIE bench-top analyzer in America (March 27, 2007) |
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XOS has announced changes to the sales and distribution, in North and
South America, of its SINDIE line of bench-top sulfur analyzers for the
petroleum industry. Until now, these analyzers have been distributed by
Horiba Instruments Inc. For
further information, contact
XOS Sales Inquiries, 15 Tech Valley Drive,
East Greenbush, NY 12061, Phone: +1-518-880-1501, sales@xos.com,
http://www.xos.com |
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| SpectroscopyNow.com | |||
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For additional news about X-ray analysis and other spectroscopy sciences, browse the Wiley website. http://www.SpectroscopyNow.com | |||
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Kenji Sakurai |
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Back Issue (Vol.36, No.3)
Previous News Vol. 34 No.1-6
(pdf) | |||
| Link to FORTHCOMING MEETINGS AND EVENTS | |||