IDENTIFY revision history ===================================== Version 2.0-28 4.12.2012 ======================== Bug in Peakfit-routine fixed which crashed Identify if very large FWHM or ASYM values were used. Version 2.0-27 11.10.2012 ======================== seldom occuring sqr(-1) removed from peak search routine. Version 2.0-26 18.9.2012 ======================== mass was accidentally integer internally. Changed to single. Version 2.0-19 25.6.2012 ======================== Additional units (Curie, Bq/kg) introduced. Another special generated report for activityscan implemented. Formula for detection limit refined. Version 2.0-17 26.10.2011 ======================= Maximum number of different gammas for one nuclide in library extended from 50 to 150. Version 2.0-16 19.9.2011 ======================= Peaks first assigned in nulide report but then dismissed were not shown in the list of not assigned peaks. Changed. Version 2.0-15 25.8.2011 ======================= Some missing translations added. U88_100 routine now with corrected results. Version 2.0-13 10.8.2011 ======================= Bug with loading of library (standard.lib) fixed. Bug with Identify crashing if r6.dat is missing fixed. Visual efficiency window: rounding of values corrected. Matrix values were ignored, now accepted. Adjust routines removed as the were not working correctly. Possibility to save efficiency calibration points added. Spectrum reading routine made to tolerate errors. Possibilities to calculate dose rate from spectrum extended, 3 different detector models (CZT500, NaI 40*40, NaI 125*100) selectable. Version 2.0-5 21.2.2011 ======================= Library filename is stored in short form in set file, if library is in the program directory. Version 2.0-5 21.2.2011 ======================= Activity per area was given wrong. The indicated unit must be Bq/cm² and not /m²; changed. Version 2.0-4 7.10.2010 ======================= Visual efficiency window expanded to 0.6% to 100% full scale instead of 1.9% to 98%. Version 2.0-3 1.9.2010 ====================== If in batch mode, Identify will no more load eventual settings from .spe file. Version 2.0-2 5.8.2010 ====================== Identify crashed with more than 2^31 counts total in spectrum when trying "save as" or "Specinfo". Problem solved. Version 2.0-0 26.2.2010 ======================= Model for NaI resolution in dependence of energy completely changed. Detector.dat correspondingly updated. Evaluation of NaI spectra should now be much better in the 10-400 keV energy range. Version 1.9-8 16.2.2010 ======================== Negative values for channel data in the *.spe file will be set to zero, to avoid crashing of Identify in such a case. Version 1.9-5 15.1.2010 ======================= Special Nucleonica report version integrated. Version 1.9-2 10.9.2009 ======================= "Read channel data only" should now read also other file formats. Version 1.9-0 26.8.2009 ======================= Seldom occuring bug in peak search routine fixed which inhibited sometimes peaks from being found. Calculated centroid correction in first evaluation is now limited to one channel. Identify now accepts also 16k spectra. Version 1.8-33 9.7.2009 ======================== Bug removed which loads library incorrectly if nuclides are not correctly sorted. Identify distinguishes now correctly between metastable isotopes (e.g. Xe133 and Xe133m) Version 1.8-31 26.5.2009 ======================== Bug removed which crashed identify sometimes when the quadratic calibration coefficient was unsuitable and dE/di=0 within the spectrum. Version 1.8-30 14.5.2009 ======================== Bug removed which gave wrong peak areas when evaluating with background spectra. Version 1.8-27 15.12.2008 ========================= Uran88_100 now finished to a certain point. It works as follows: First it checks, if there is coarsely the 186 keV and the 98 keV peak present. Then it recalibrates in terms of energy and FWHM to this peaks. Then it creates template spectra of U235, U238 (including daughters Th231 and Pa234) and makes a least squares fit to the spectrum. Works acceptable in the range 2-20% enrichment, but still the error estimation is somehow too low, some systematic influences are certainly missing. Version 1.8-25 13.11.2008 ========================= Peaksearch: In contrary to 1.8-15, peakfit is now used for all singlets, the box function is dropped. Too much smaller peaks would be deleted otherwise. U88_100 started but not finished. Saves now spe files with correct $ENER_DATA_X: Version 1.8-24, 21.7.2008 ========================= Picks now 3 calibration points from Atomtex .spe file $ENER_TABLE:. 1st calibration point is taken at 87.5% of full scale, second point is at 12.5% and 3rd point at 50%. Version 1.8-22, 17.3.2008 ========================= Under Analysis a point "Specinfo" was added. This evaluates total counts, total energy in spectrum and dose rate. Include dose rate correction function was optimised for a 40*40mm NaI, eventually this is extended in future. A dose rate calibration factor was added in settings-general. Version 1.8-15, 29.10.2007 ============== Peaksearch: For singlets now the peak search routine uses allways the box function for area error estimation and not for less significant ones the peakfit output. The error from peakfit seems to be a little bit small. If Identify is called with an spectrum as argument, the directory is checked for an existing hintergrund.spe. If this exists, its loaded automatically as background spectrum. Peaksearch with background spectrum loaded gives bad results if background is not exactly the same energy calibration; in this case substraction creates artefacts which are interpreted as peaks. An additional area error based on assumed calibration drift is now included, which solves this problem. Version 1.8-12 ============== With the list of not assigned peaks erratically the centroid error was listed and not the FWHM. Korrected. Version 1.8-8 ============== automatically generated report file extended by peak list. Peak list extended by centroid error and peak rating. Version 1.8-6 ============== detektor.dat extended by 1"LaBr and 1cm CZT. /0-error fixed in ecal routine Version 1.8-5 ============= HPGe.lib added. Maximum spectrum size extended to 8k. Version 1.8-4 ============= Alpha spectroscopy possibilities and library added. Reading of SARAD spa spectra. Minor corrections. Some bugs with extreme values at efficiency calculation fixed. Version 1.7-15 ============== Identify reads now correctly the amplitude spectrum of a MCS measurement. Version 1.7-14 ============== Identify now does not crash anymore, when "Saving as" or "show file content" is used without having loaded a spectrum previously. Background spectrum loading improved and further bugs with model spectra representation when background spectra are used fixed. Version 1.7-11 ============== Bug with background representation using background spectra fixed. Bug with restoring the setting "nuclide report" fixed. Version 1.7-10 ============== Now correct reading of spectra with 3-point calibration. Centroid error calculation with 3-point calibration implemented. Bug with "keep previous energy calibration" fixed. Version 1.7-6 ============= Bug removed which prevented implicit spectrum call with Win2000 Version 1.7-1 ============== Nuclide identification algorithm improved: No peak can be assigned to multiple gamma energies of the same nuclide any more. Version 1.7-0 ============= Background spectrum substraction possibility implemented. Version 1.6-10 ============== Option "Show also not found peaks" changed into "Show info about peak assignment". If the option is choosen, then with the nuklide also the channel numbers of the assigned peaks are shown. Version 1.6-9 ============= Spectrum generation, considering compton scattering, implemented. Saving of spectra improved. Version 1.6-6 ============= Autocalibration to Eu152 routine added. Version 1.6-5 ============== Bug within energy calibration window fixed. Set file updated to include now also the channel-energy value pairs of the calibration. Version 1.6-3 (27.2.2003) ============== Correction factor for CsI detector efficiency included. Version 1.6-2 (24.2.2003) ============== Bug with library editor fixed. In previous version, intensity was multipied eratically with decay channel probability, which in some cases lead to faulty spectra. Version 1.6-0 (2.1.2003) ============== Russian language support added. Option "generate report only on implicit call" added. CsI added as detector Material. Some bugs concerning decay chain handling in library editor removed. Version 1.5-16 (4.10.2001) ============== -Bug with loading of .chn files removed Version 1.5-15 (8.4.2001) ============== -"Main library search" can now be accessed from Identify- Analysis menu or by pressing F12. -peaks with an energy in the range 506...516keV excluded from FWHM adjustment routine. -Bug in library editor fixed: Intensities are now corrected for the branching ratio of their decay mode. -Further bugs with libraries and some useless error messages removed. Version 1.5-13 ============== -margins added to graphic printout -to 'visual efficiency' a routine was added which calculates absorber thickness from a spectrum and adjusts it. Version 1.5-12 ============== -Error estimation for peakfit routine added. -Main library now completely updated. The library manager now separates correctly between ground state and metastable variants of the same isotope. Also the daughter nuclide calculation routine uses now the correct branchings if multiple decay modes are possible. Version 1.5-9 ============= -Some Bugs in nuclide report removed -xrays activity output removed. -U enrichment is now given if U235 and U238 is found in spectrum Version 1.5-6 ============= -remarks are now added if nuclide identification is uncertain. -e+ (511 keV) added to main library -fluorescence xrays added to main library -exponential tailing now also shown with peak report Version 1.5-4 ============= Graphical energy calibration linearity check window added. Version 1.5-3 ============= -Peak model extended to a gaussian distribution folded with an exponential distribution. All parameters for the distribution can be set and evaluated. For peak parameter evaluation a new least squares peakfit routine is used. Multiplett deconvolution also consideres now exponential tails. -If no strong peak within a spectrum is found, a second search with increased sensitivity is performed. -DETEKTOR.DAT extended to include tailing values for CdTe detectors. Version 1.4-11 ============== -Quickid mousepointer now shows also channel content -Clicking and dragging on the spectrum now selects a detail of the spectrum as in identify. -model spectrum now blue in QuickID -Quickid ecal removed and library name added to evaluation list -Clear evaluation function added -result options for uncertain and not found nuclides separated -improbable escape peaks are not mentioned any more in cursorinfo Version 1.4-8 ============= -Bug with small branching ratio labels fixed. -QuickID printing enabled (including batch print mode when multiple spectra are chosen. -QuickID filename, calibration LT,RT, remard and scale info added. Version 1.4-3 ============= -QuickID user interface added. Version 1.3-15 ============= -Option keep previous calibration when uncalibrated spectrum is loaded. -Backscatter peak removal improved. -Bugs concerning multiplett marking and model spectra baseline fixed. -Additional peaksearch during deconvolution disabled for CdZnTe. Version 1.3-1 ============= -The model spectrum is now calculated for all isotopes with marker set. -Also in visual efficiency error bars are now shown for all isotopes with the marker set. Version 1.2-8 ============== -Peak deconvolution implemented. This feature need proper FWHM settings. For control, a green line shows the spektrum with the evaluated peaks substracted directly after peak search. -rating for nuclide report pattern recognition implemented: an assignment is rated uncertain or very uncertain if only one peak is assigned and the peak is very small or also assigned to another nuclide or the energy fit is bad. -The display of uncertain or not found isotopes can be switched off. -The escape peak markers can be switched of in the general settings menu. -Existing files can now be overwritten. -Library manager menu redisigned. Some irritating functions removed. -It is now possible to save spectrum with same filename. Some bugs concerning spectrum saving fixed. -Detector function menu redisigned. It is now possible to give a value for source matrix and extra shielding. Also possible is to state shielding as uncertain, which causes the low energy region efficiency error to be 5 times as high. Version 1.1-17 =============== -Load & evaluate feature: loads spectrum, makes peak search and gives list of nuclides with peak marked on one mouseclick. -nuclide report pattern recognition improved (better efficiency error calculation for peaks close together) -centroid calculation improved. -Window showing FWHM versus photon energy of actual spectrum implemented. -Visual efficiency window designed more variable in range. Bug removed with too short error bars for mimimum detectable amount. -systematic error of 0.5% / FWHM (differential nonlinearity) added to area error evaluation. -Prospective Compton edges or backscatters are now only marked if their FWHM is >1.2 times the theoretical limit. Version 1.1-10 =============== -Improved background calculation for the model peaks. Within ROIs, the background is now not just a straight line, but the change in background is proportional to the actual netto counts. Another routine avoids that the calculated background gets significantly higher than the local channel counts. -Identify can now calculate the position of compton edges and backscatter peaks. For CdTe and NaI, peaks between 150 and 235 keV are checked if they could be backscatter peaks of peaks at higher energies. From 150 keV on peaks are also checked if they could be misidentified compton edges. If this is the case, the peaks are deleted and the area error in this region is increased to document that the region is uncertain to use. -The singlet aceptance limit is again increased to 1.4 times the theoretical FWHM. Version 1.1-6 ================ -Singlet peaks with more than 1.4 time the theoretical FWHM are now ignored to avoid compton edges to be detected as peaks. -ROI limits for CZT corrected. ROI is now from -2.2 FWHM to 1.25 FWHM and on both sides of the ROI 0.5*FWHM channels for background determination. Version 1.1-5 ================ -An additional window shows all decay products of the selected nuclide and allows also to include gamma energies of daughter nuclides. -It is possible to show quantities also in kg, not only Bq. -It is now possible to continue evaluating a spectrum in the main window while the library editor window is open. -3 more libraries (fission.lib, natural.lib, activate.lib) added -From the main library window it is now possible to perform a main library search. All nuclide in the left list field are searched for gamma energies fitting to the actual centroid. Clicking on the nuclides found shows model spectra with all energies of main library. -landscape format printing is now possible. -Saving a spectrum with "save as" includes now in the *.SPE - file all identify settings, all peaks found and all marked nuclides. Loading a spectrum restores all identify settings, peaks and marked nuclides if included in the *.SPE file. -Bug occuring with more than 400 gamma energies in lib fixed. -Bug with mixed small and capital file name extensions fixed. -Bug with too big errors calculated for efficiency when absorbers are assumed is fixed. -Also "load only channel data" now deletes all previous calculations -Division by zero bug in visual efficiency fixed Version 1.0-19 ================ -minor bug concerning model spectrum display at low energy end of spectrum corrected. -opening of a *.spe file with Identify is now possible without errors, if Identify is assigned to the extension *.spe . Calling identify with a filename as argument opens this file and starts a peak search. Version 1.0-11 ================= english help text is now shown correctly minor corrections in file property display Version 1.0-8 ================= first released version (22.9.99)