MssFitting (1995) Arranged and Developped by Dr. A. Lehlooh and F. Rawwagah Physics Department, Yarmouk University Irbid-Jordan Welcome to MssFitting, you can use this package to fit Mssbauer spectraand view results as well as fitted spectra. In this package you have to find:(1) Fitting Programs and paramer files: NFOLD.EXE ..................... Spectrum folding program. MOSS.EXE ...................... Least square moss Spectra fitting program. CALIB.EXE ..................... Calibaration program. Frange ........................ Field distribution fitting Program. PRESETED.SET .................. Advanced parametrs for MOSS. CALDAT.DAT .................... Advanced parametrs for FRANGE. MOSS.PAR ...................... Standard paramters for MOSS. FRANGE.PAR .................... Standard paramters for FRANGE. not controlled yet by M.BAT. (2) Support Programs and files: M.BAT ......................... Control command file. RESPOND.COM ................... Program necessary to execute M.BAT. ED.EXE ........................ Text Editor. WPVIEW.EXE .................... Text viewer. TRIANAME.EXE................... Supporting Routine. CDFNAME.EXE ................... Supporting Routine. RDFNAME.EXE ................... Supporting Routine. VIFOL.EXE ..................... Folded spectrum viewer. TVIEW.EXE ..................... Fitted spectrum. AUTODIST ...................... Field distribution viewer. SVIEW ......................... Viewer for spectra fitted via FRANGE. -----------------------------------------------------------------------------I N S T R U C T I O N S:-------------------------I. To start Mssfitting do the following: At the DOS prompt type: M followed by . A control menu will displayedprompting you to press a letter key. As you press the desired letter the pro-gram will exute as described on the right hand of the window. This help screen for example may be viewed by pressing H key.II. Folding:-------------- To fold a spectrum do the following: 1. At the Main Menu press F key. 2. Edit the raw data file to enter or revise the namelist which have to be as follows:&IDENT SYSTEM=5, Don't change this line. FNAME='Replace this text by file name of folded data' REFNO=1.0, Reference number OVFLOW=1, Number of overflows of the MCA NC=512 Maximum number of channels of the MCA. &END Replace this text by an identification of your dataExamples: The following is a typical raw data file &IDENT SYSTEM=5, FNAME='Ni' REFNO=1.0, OVFLOW=1, NC=512 &END Fe65Ni35 VEL.=62 R.T B= 0 DATE:20/2/1993 12:35PM 648752 351175 730531 732797 . . .3. Press F to fold the data and follow the instructions of NFOLD program.4. Press V to view the folded spectrum.5. Press R to return to the main menu.III. Calibration: To calibrate your system do the following: 1. At the main menu press C key.2. Edit the calibration data file to enter or revise the namelist which have to be as follows: &IDENT SYSTEM=5, Don't change this line. FEIN=105,140 The locations in channel for the innermost peaks. FEOUT=40,204 The locations in channel for the outermost peaks. OVFLOW=1, Number of overflows of the MCA NC=512 Maximum number of channels of the MCA. &END Replace this text by an identification of your dataExample: &IDENT SYSTEM=5, FEIN=105,140 FEOUT=40,204 OVFLOW=1, NC=512 &END Fe57 Calibration data VEL.=62 R.T B= 0 DATE:20/2/1993 12:35PM 648752 351175 730531 732797 . . .3. Press C to run the calibration program and follow it's instructions.4. Press R to return to the main menu.IV. MssFitting:------------------1. At the main menu press M to run Mossfitting.2. Edit the parametr file for MOSS program. Different parameter files required for different types of fitting. Some typical parameter are saved in the following files: File Fitting Description ------ ---------------------- 1S.PAR ............................... 1 Singlet (ParaMagnetic) 2S.PAR ............................... 2 Singlets 1Q.PAR ............................... 1 Doublet (Quadrupole) 1M.PAR ............................... 1 Sextet (FerroMagnetic) 2M.PAR ............................... 2 Sextets 1S&1M.PAR ............................ 1 Singlet + 1 Sextet 1S&2M.PAR ............................ 1 Singlet + 2 Sextets Typical Parameter file have the following format: &FILES DFITIN='Replace this by text by raw data file name' DFITOT='T', PFITOT='T', SHPROT='T', Don't change the contents of this line. &END &DATA REFNO=1.0 Refernce no. PV=18.0, Range of scan velocity of the source. PFIX='GOVG','DEAD' Quantities between two abstrophes are invariant (Fixed). WV(1)=3*1, By this you choose a symmetric sextet. WVARY=T, Width variation is True WIDT(1)=0.3,0.5,0.3 Suggested line withs in mm/sec. Note that the number of values=no. of components CS(1)=-0.15,-0.1,0.1 Suggested Center shifts in mm/sec. GH(1)=3.9,3.5, Suggested value for Hf paramter. Note that for Hf=330 T, GH=3.9 . HEIG=2*1, ST=0.2,0.3,0.5, Suggested values for site to site ratio. The lines below down to &END need not to be changed SAVE=T, ERR=0.001, NTCYC=100, NDCYC=15, GOVG=-0.5711, AIG=0.5, AIX=1.5 ZG= 3*0.5, 3*-0.5, ZX=1.5,0.5,-0.5,0.5,-0.5,-1.5 LAST=T, &END 125.5 Center of folded spectrum for NC=512. For NC=1024 this is = 251. in that case you have to change NC in the Advanced parameter file PRESETED.SET . 3. Press M to start fitting and follow the instructions of MOSS.EXE. 4. Press the required letter to Edit, view, print,...etc.