ALADDIN, A Labelled Atomic Data INterface, is a data format developed in order to provide a standard and flexible method for the exchange and management of atomic, molecular, and plasma-surface interaction and material properties data of interest to fusion research.
A schematic illustration of an ALADDIN data entry is shown
below:
$AL HL1 HL2 HL3... & BL1 BL2 BL3... #EL
(Searchable labels)
! THIS IS A SCHEMATIC ALADDIN ENTRY (Comment lines)
A B C D E F ... (Coefficient field)
The symbols AL, HL, BL indicate generic Access, Hierarchical and Boolean labels, respectively. A specific ALADDIN data entry, e.g., for the ionization of singly-ionized iron in its groundstate by electrons is
$ ION e Fe [+1] (G)
& RC REC ACC=A ORNL-CFADC DOC=NUC-FUS-SUPP/87 06/02/89 #CHEB
! Reaction Rate Coefficients from Experimental data
-37.2224 2.71988 -2.48007 1.033430 -.4456020 .20346000
-.075466300 0.0 0.0 2.0 2.0E+04
The symbols appearing in an ALADDIN data entry are described below.
$ The "$" symbol, in column 1, denotes the start of an ALADDIN entry. The "$" character, with optional suffix, is taken as the access label. A blank access label suffix means that standard ALADDIN entry routines are to be used. The "$" symbol with, optional suffix, is folowed by the blank delimeted hierarchical labels. & The "&" symbol denotes the end of the hierarchical and the start of the Boolean labels. # The "#" symbol denotes the end of the labels fields. The "#" symbol, with optional suffix, identifies the evaluation function which is used by ALADDIN to generate numeric data values from the information in the coefficient field which follows. ! The "!" symbol, entered in column 1, of a line identifies that the information on the remainder of that line are comments for the particular entry. REC Data recommended by IAEA Atomic and Molecular Data Unit. EVAL Data evaluated and/or recommended by a source other than the IAEA Atomic and Molecular Data Unit. COMP Data compilation FORM Analytical formula ORIG Taken from original data source XS Integrated collision cross section in recommended units of cm[2] RC Rate Coefficient in recommended units of cm[3]/s for two-body collisions and in cm[6]/s for three-body collisions DXS1 Single differential cross section in angle or energy DXS2 Double differential cross section in angle and energy WL Wavelength in recommended units of nm EN Energy of a level in recommended units of eV. For particles, energies are specified in recommended units of eV for electrons and eV/u or eV/amu for heavy particles. TEMP Temperature (kT) in recommended units of eV TP Transition probability in recommended units /s LT Lifetime (or decay rate) recommended units of s or /s. DOC Reference source for data {} Subscript [] Superscript () Quantum state (where needed to specify reactant or product) ACC=A+ Accuracy 3% or better ACC=A Accuracy between 3% and 10% ACC=B Accuracy greater than 10% and less than or equal to 25% ACC=C Accuracy greater than 25% and less than or equal to 50% ACC=D Accuracy greater than 50% and less than or equal to 100% ACC=E Uncertainty larger than 100%