New on the Atomic and Molecular Web Site

The Atomic and Molecular Data Unit is dedicated to continuing to improve the level of access to quality data for use in nuclear fusion energy research. To meet this goal, the Unit will regularly add new features and capabilities to the Unit web server.

Staff Change May 2018
As of 1 May 2018, Kalle Heinola has joined the Atomic and Molecular Data Unit.

Staff Change October 2017
As of 1 October 2017, Christian Hill is Unit Head.

Staff Change December 2016
Unit Head Bas Braams retired from the Agency and Hyun-Kyung Chung is an acting Unit Head as of December 1st.

John Dawson Award for Excellence in Plasma Physics Research of the American Physical Society. November 2015
The A&M Data Unit staff Hyun-Kyung Chung is a recipient of the 2015 John Dawson Award for Excellence in Plasma Physics Research of the American Physical Society. The citation reads: "For creative and novel use of the hard x-ray free electron laser to isochorically create high density plasmas and accurately measure the ionization potential depression, and for new theory that addresses discrepancies with long standing models and provides stimulus for continued developments."

Spectral Line Shapes in Plasmas September 2015
A special Issue of "Spectral Line Sahpes in Plasmas" published in Atoms journal after the 2nd Specral Line Shapes in Plasmas code comparison workshop (in cooperation witih IAEA) is available on line.

GRASP2K Codes August 2015
The webpage for "GRASP2K relativistic atomic structure package" (GRASP2K) is available. Codes can be downloaded after reading the license agreement and accepting it.

FAC Codes August 2015
The webpage for "Flexible Atomic Codes" (FAC) developed by M. F. Gu is available. Codes are available from GIT repositories and input files for various problems can be downloaded from this page.

Server Migration 4 September 2013
All functionalities of are working properly.

FAC data 5 April 2013
Atomic data sets for elements of He - Si computed with FAC code are available for download. Data sets include Autoionization rates,Collisional excitation cross sections, Collisional ionization cross sections, Energy levels, Radiative recombination and photoionization cross sections as well as Radiative transition rates.

Server Migration 4 April 2013
The server for is re-instated but only the static pages are available. We apologize any inconvenience due to this migration.

Server Migration 30 November 2012
The is out of line for migration to a new server maintained by IAEA IT services. The new server will have a new operating system with a tight IT security policy. We expect that our server will be more secure and renovated.

Server Migration 20 January 2012
The servers for and for are replaced. We apologize any inconvenience due to this migration.

AMBDAS version 3.2 2 March 2011
The search query can retrieve bibliographic data based on the method and distinguish theoretical work from experimental work. The method can be unspecifid, theory, experiment or both theory and experiment.

GENIE version 2.4 1 November 2010

Knowledge Base for A+M/PSI data for Fusion 27 June 2010
The AMD Unit has started to develop a Knowledge Base for A+M/PSI data for fusion. The Knowledge Base relies on Wiki pages. It is hoped that these will be developed through voluntary content contributions and peer review by the A+M/PSI community with the AMD Unit in a coordinating role. The Knowledge Base is inspired by goals of Web 2.0 technology: to facilitate interactive information sharing, interoperability, user-centred design and collaboration on the web. The present content draws almost exclusively on past APID volumes, INDC(NDS) reports and presentations at CRP Research Coordination Meetings, but as new contributors participate in the development the sources can also become more wide-ranging. Major headings in the present design of the Knowledge Base include Data Needs (sections on magnetic confinement fusion, inertial confinement fusion, atomic data, molecular data, and plasma-material interaction data) and Data Sources (sections on online databases, data centres and code centres). There are also sections on special topics including the CRPs of the AMD Unit. The Knowledge Base is accessed by Google Search. Further contributions are very much invited.

AMBDAS version 3.1 7 April 2010
In this version, DOI (Digital Object Identifier) numbers are added to bibliographic data. Out of 46878 reference data in the AMBDAS database, 34420 data are linked to the full text of the electronic journal and 5115 data are linked to the abstract by the DOI link. Users can access the on-line source by clicking on the DOI number of an article.

FLYCHK 1 March 2010
Average charge states of atoms from Z=1 (Hydrogen) to Z=79 (Gold) are calculated by FLYCHK code and plotted over a wide range of plasma conditions. The calculation is done for the steady-state plasma with electron temperatures from 0.5 eV to 100 keV and electron densities from 1E12 cm-3 to 1E24 cm-3. Click the element in the periodic table and a page will apear with , Charge State Distribution and Radiative Power Loss Rates. a plot will be shown. One may download the data files on the plot page.

LANL Codes 1 February 2010
A group at LANL participated at the CRP for "Atomic Data For Heavy Element Impurities in Fusion Reactors" and produced atomic data sets for argon, chlorine and silicon atoms for users. The data sets include level energies and statistical weights of fine-structure levels of the ground and excited configurations, oscillator strengths and electron-impact excitation cross-sections, photo-ionization and electron-impact ionization cross-sections among the levels. Compressed files (bigger than 1 GB) can be downloaded here

XSAMS, XML Schema for Atoms, Molecules and Solids 22 September 2009
The first version (v.0.1) of XSAMS has been released. The goal of the XSAMS project is to develop a new XML-based standard for exchange of atomic, molecular and particle-solid(surface)-interaction (AM/PSI) data. This approach allows one to describe both the static properties of the AM/PSI constituents and interactions among them in a consistent and well-structured way.

Code Center Network 30 July 2009
The CCN, coordinated by the IAEA A+M Data Unit, is a joint effort to gather and provide access to any information relevant for modelers in fusion plasma science. Its purpose is to provide solutions to anyone willing atomic or molecular and particle surface interaction (AM/PSI) data which can not be easily accessed on the web or which simply do not exist.

ALADDIN version 3.2.0 15 July 2009
This is a major upgrade for the Particle Surface Interactions (PSI). The PSI database has been reviewed and a large amount of new data has been added. Both web interfaces, for collisional and PSI data, present now the same interface:

ALADDIN version 3.1.1 17 March 2008
This new release fixes a few bugs when user parameters are passed to some fit functions. Data and fit functions from the following publications have been reviewed:

ALADDIN version 3.1 8 January 2008
In this version, data outputs are displayed in a new window and some new functionalities are available like a "select all data" button. The bug on the automatic set of the upper and lower limits, while selecting and unselecting data is solved. The exact values of the fit parameters for the fit functions are displayed, as in some cases rounded values could give incorrect results. Full reference is listed with the numerical data.

GENIE version 2.3 4 September 2007

The review of the "surface interactions data" is in progress; the web interface is still in its version 2.3.

GENIE version 2.2 23 Janvier 2007

ALADDIN version 3.0 20 July 2006
The numerical database ALADDIN, in its new version 3.0, has an entirely redesigned interface. Searches are performed more efficiently by using any possible search criteria combinations along with a filtering function that allows the user to get a better inside view of the database content. When possible all requested data are displayed in the same units to permit easy comparison. A unit conversion tool is available and all results can be displayed in tabular and graphical mode. To implement version 3.0, all data from ALADDIN have been reviewed. This work is complete for the "atomic and molecular data". The review of the "surface interactions data" is in progress.

GENIE version 2.1 22 April 2005
Two new databases from the Institute of Applied Physics and Computational Mathematics of China (IAPCM) CAMDB have been introduced in this version:

AMBDAS version 3.0 16 February 2005
In this version the structure of the database has been modified. This allows more efficient searches for iso-electronic series and for surface interactions. The request symetry problem when specifying two reactants has been resolved.

New ALADDIN Version 29 November 2004
This new version of ALADDIN includes a large amount of new data. The structure of the database has been revised to merge and to redistribute the data of the 4 former databases (Collisional Database, H-Beam Neutral Database, Particle-Surface Database, Elementary Processes in H-He Plasmas) into 2 databases:

This improves the searchability of ALADDIN. The interface has also been modified to simplify searches and to give a better readibility of the outputs.

Los Alamos atomic physics codes 9 July 2004
This is a gateway to LOS ALAMOS Physics codes. An interface is available to run several atomic physics codes for calculation of atomic structure, electron impact excitation, as well as ionization processes.

Heavy Particle Collisions 10 June 2004
Cross sections for excitation and charge transfer for collisions between hydrogenic targets and bare ions can be calculated online. Potential users are asked to request a user name and password.

AMBDAS version 2.2 17 March 2004
In this new version search capibilities have been improved. Presentation of data have been slightly modified for a better reading. The web interface has also been simplified.

Priorities in Data Compilation, Evaluation and Generation for Fusion Research 21 November 2003
The priorities in data compilation, evaluation and generation for fusion has been reviewed by the last DCN meeting held in 6-7 October 2003 in the VIENNA IAEA headquaters.

GENIE version 2.0 14 November 2003
In this new version, search technique has been refined with a large speedup in data retrieval. Instead of sequentially, data retrieval is done simultaneously for each database. For the spectral databases, of a present amount of 7, the total response time is about 3 times better and only constrained by the slowest database web site.
The AMODS Spectral Lines Database from the Korean Atamic Energy Research Institute (KAERI) has been added.

New Server October 2003
On the 3, November 2003, our website switched on a new server, a Compaq server running under Linux, Redhat 9.0.

In the past the bibliographic data used in producing this Bulletin were accessible only through a Telnet connection. Recently Y. Ralchenko has worked with the Unit as a consultant and produced a web based interface for the bibliographic database. This allows users to search the entire bibliographic database using a number of criteria, such as author, process, reactants, etc.

Online Computing
In some cases there are needs for data which are not available in any on-line database. In that case it is often possible that such data could be calculated from existing computer codes, so that at least an estimate of the data would be available. The A+M Unit has been working on making a method for providing access to some A+M codes. J. Peek brought a version of a code for electron impact excitation cross section calculations to the Unit. This code uses the atomic structure calculations of R.D. Cowan. These codes have now been made accessible through our webserver, so that it is possible to calculate approximate cross sections for arbitrary ions for most elements.

  1. Average Approximation
  2. Rate coefficients
Following the success of this method, the Unit is in the process of encouraging other institutions to pursue similar activities, so that it is hoped that a number of calculational tools will become available for a number of processes.

As new databases become available on-line at various locations, new data relevant to fusion research have the potential to be accessed. However, to make use of different databases it is necessary for the user to understand the protocol for each database. In some cases it is necessary to register on the database as well. In response to this situation the A+M Unit has worked with consultants Y. Ralchenko and D. Humbert to develop a prototype search engine, called GENIE. GENIE makes it possible for a user to enter one request for data, either radiative or collisional, and to have that request sent in proper format to several available databases. Results of the searches are then presented to the user. Currently this prototype is limited to a few databases and the requests are quite limited in nature. However, continued development is foreseen and this promises to be a useful tool.

New data
Considerable new data are constantly being added to the on-line databases. Recently a large amount of data for plasma-surface interaction has been added. Recently, a large amount of data for radiated power from plasmas of interest to fusion were made available.