IXAS Executive Committee (EC) Election 2018 -- Voting

June 7, 2018

A new Executive Committee of the International X-ray Absorption Society (IXAS) will start
its term after the XAFS conference in Krakow.
The nominating committee has assembled the following list of candidates:

Vice chair :
       Kiyotaka Asakura,  Hugh Harris

Secretary/Treasurer :
       Paola D'Angelo,  Edmund Welter

Europe/Russia/Africa (1 new member) :
       Maarten Nachtegaal,  Alexander Soldatov

Asia/Oceania (2 new members) :
       Hitoshi Abe,  Wantana Klysubun,  Way-Faung Pong,  Xuhui Sun

Americas (2 new members) :
       Klaus Attenkofer,  Simon Bare,  Santiago Figueroa,  Trevor Tyson


Only paid members of IXAS are allowed to vote. You can become a paid member at the Registrarion page .
After the paid member login you will find a link to the election site.

We hope that many of you will participate in the elections.

Best wishes,

IXAS Executive Committee Officer
Pieter Glatzel, Matt Newville and Daniel Haskel



Nomination for the IXAS awards

February 16, 2018

The Awards Committee of the International X-ray Absorption Society (IXAS) seeks nomination for three awards. These awards will be presented at the XAFS17 Conference in Krakow, Poland.

The three awards are:

1. The Edward Stern Outstanding Achievement Award:
This is the highest award of the International X-ray Absorption Society. Nominations are invited across all disciplinary areas including both experimental andtheoretical studies of XAFS. Award: $1000

2. The Farrel Lytle Outstanding Young Scientist Award for Theory and Instrumentation:
Nominee must have made remarkable contribution to the field of X-ray absorption spectroscopy. Nominee should be within 8 years of a Ph.D. (or equivalent) degree as of April 1, 2018. Award: $500

3. The Dale Sayers Outstanding Young Scientist Awards for Applications of XAFS:
Nominee must have made remarkable contribution to the field of X-ray absorption spectroscopy. Nominee should be within 8 years of a Ph.D. (or equivalent) degree as of April 1, 2018. Award: $500

Nominations should include a CV with publications, a letter of recommendation and academic referees who can be contacted for further reference.  The deadline for nomination is May 1, 2018.

Please send nominations by email to IXAS vice chair Matthew Newville
< >

XAFS17(2018) : http://www.xafs2018.com/

Tadashi Matsushita Obituary

Sep 07, 2017

Former vice-director of the Photon Factory, Prof. Dr. Tadashi Matsushita passed away in Tsukuba on July 7, 2017 at the age of 72. Born in 1945, he received his PhD degrees from the University of Tokyo in 1972. After working in Fuji photographic film, he came back to the University of Tokyo in 1975 then moved to KEK in 1980. He led the Photon Factory for long period as a Deputy Director of Institute of Materials Structure Science and the Head of Instrumentation Division of the Photon Factory in KEK. Photon Factory started its operation in 1982 as a second generation synchrotron facility. He led the upgrade project of the Photon Factory and made it a pseudo third generation facility of fairly low emittance (36 nmrad) with 10 insertion devices including in-vacuum type undulators. Also he led the constructions of many beamlines such as EXAFS using Si(311) channel-cut monochromator, versatile X-ray beamline using 53-pole multipole wiggler etc. He worked as the chairperson on the Japanese Society for Synchrotron Radiation Research and prevented to charge for beamtime at SPring-8 for nonproprietary research..

He is one of the pioneers of application of synchrotron radiation, contributing to modern x-ray optics and beamlines as well as energy-dispersive (ED) EXAFS instrumentation. He has greatly contributed to the aberration-free optics and constant beam-height double crystal monochromators which are now used as standard x-ray optics world-wide. He has demonstrated the capabilities and potential of ED-EXAFS, at SSRL with Paul Phizackerley in 1980, establishing the basis of a wide application of time-resolved EXAFS* which has been further brushed up to a state-of-the-art technique later by Alain Fontaine and Sakura Pascarelli.

Back at Photon Factory, he spent most of his time for administration of the facility. However, he preferred research to administration work. Thus after his retirement in 2008, he developed the energy-dispersive reflectivity measurement technique. This is also applied for time-resolved experiments and X-ray crystal truncation rod scattering.

Tadashi Matsushita will be sorely missed by the world’s XAFS community. Techniques he developed will be used by many researchers and will contribute to clarify many science questions.

*An energy-dispersive spectrometer for the rapid measurement of X-ray absorption spectra using synchrotron radiation, R. P. Phizackerley, Z. U. Rek, G. B. Stephenson, S. D. Conradson, K. O. Hodgson, T. Matsushita and H. Oyanagi: J. Appl. Cryst. 16, 220 (1983).


slide1 copy copy copy

EDXAS photo 1 copy

Tadashi (top) and Sakura and Alain at the EDXAS workshop (bottom) (Courtesy of Yasu Niwa and Sakura Pascarelli)

New bylaws and transition to paid-membership society

Dear IXAS colleagues,

The executive committee of IXAS has approved important revisions to the society’s bylaws. The new bylaws can be found at : Charter and Bylaws.

The new bylaws redefine the geographical regions and establish an IXAS advisory committee besides some minor revisions.

The most significant change is to convert the society into a paid-membership society. Your membership fees will allow the society to support activities that help advance the field such as web resources and promotion of standards & criteria.

The membership fee has been set at 30 Euros for a three-year membership. The benefit that comes with an IXAS membership is above all the wonderful feeling of having contributed to a worthwhile cause. Other benefits include a discount of 50 Euros on the XAFS 2018 registration fee, as well as the right to claim membership in the IXAS. We are aware that the former is a weak incentive because conference registration fees are usually covered by the employer. However, we hope that you will make the additional effort and become an IXAS member.

The transition into paid-membership starts December 1, 2017 and will be completed by the second day of the XAFS2018 conference. IXAS members currently registered on the IXAS portal that do not pay membership fees by then will be converted into “IXAS subscriber” status.

You can become a member at: New Paid Membership Registration.

The IXAS will maintain two databases: The current IXAS portal member list and a new database with paying members. Only paying members are allowed to run for a position in the Executive Committee (EC) and to vote in EC elections. Access to the IXAS portal web pages is identical for the two databases.

Note that during the transition period there will be two independent combinations of login name and password for IXAS portal subscribers and paying members.

Please do not hesitate to contact a member of the EC in case of questions and suggestions. The IXAS greatly appreciates any kind of involvement.

Thank you for your support and looking forward to seeing many of you at XAFS 2018 in Krakow,

Pieter Glatzel, Matt Newville, Daniel Haskel
On behalf of the IXAS executive committee

XFIT GitHub links

Aug. 29, 2017

XFIT GitHub links



The XFIT package of codes (AVERAGE, SPLINE, XFIT, GRAPH) was written in Sydney the 1990s by Dr Paul Ellis under the supervision of Prof. Hans Freeman. The package contains some useful functionality for data reduction (WSIWYG aspects) and especially for curve-fitting of EXAFS data including geometrical constraints/restraints and two-site modelling. However the code for most parts has not been supported for many years and some parts (SPLINE) cannot run on later than Windows XP service pack 1. In addition, XFIT only supports the use of FEFF4 and FEFF6.

The code is now released into the public domain through the following GitHub links. Rather than wishing for an updated version of XFIT, instead we hope that active programmers in the community will co-opt useful sections of code to incorporate the most treasured aspects of the software into their own packages.

Please let us know if you are doing so by emailing Hugh Harris ( ) with XFIT in the title. James Hester has some experience with the code and has agreed to answer some questions at .