' ' ' ' '\' INSTRUMENT { GEM Instrument name C:\Gudrun_20_10_2009\GudrunGUI_2\ Gudrun input file directory: x:\\ Data file directory raw Data file type C:\Gudrun_20_10_2009\New Start Files\gem_det_034c1.dat Detector calibration file name 6 User table column number for phi values C:\Gudrun_20_10_2009\New Start Files\BANKS_051M.GRP Groups file name * Deadtime constants file name 6 7 8 Spectrum number(s) for incident beam monitor 0.5 3.0 Wavelength range [Å] for monitor normalisation 9 10 11 12 Spectrum number(s) for transmission monitor 0.0 Incident monitor quiet count constant 0.0 Transmission monitor quiet count constant 30 4980 Channel numbers for spike analysis 4 Spike analysis acceptance factor 0.1 3.5 0.1 Wavelength range to use [Å] and step size 100 30 No. of smooths on monitor and vanadium 0.01 60.0 0.02 Min, Max and step in x-scale (-ve for logarithmic binning) 0 0 0 0 0 0 0 0 to end input of specified values 1.0 Groups acceptance factor 4 Merge power 0 Subtract single atom scattering? 1 Statistical weighting on merge? 17.0 Incident flight path [m] 0 Spectrum number to output diagnostic files C:\Gudrun_20_10_2009\New Start Files\sears91_gudrun.dat Neutron scattering parameters file 1 Scale selection: 1 = Q, 2 = d-space, 3 = wavelength, 4 = energy, 5 = TOF 0 Subtract wavelength-binned data? } BEAM { CYLINDRICAL Sample geometry 2 Number of beam profile values 1.0 1.0 Beam profile values (Maximum of 50 allowed currently) 0.05 0.2 100 Step size for absorption and m.s. calculation and no. of slices 10 No. of scattering angles to calculate corrections at -0.75 0.75 -2.0 2.0 Incident beam edges relative to centre of sample [cm] -2.0 2.0 -2.1 2.1 Scattered beam edges relative to centre of sample [cm] C:\Gudrun_20_10_2009\New Start Files\spectrum000.dat Filename containing incident beam spectrum parameters 1.0 Overall background factor } NORMALISATION { 1 1 Number of files and period number GEM45194.raw NORMALISATION data files 1 1 Number of files and period number GEM45189.raw NORMALISATION BACKGROUND data files 1 Force calculation of corrections? V 0 1.0 Normalisation atomic composition * 0 0 * 0 0 to specify end of composition input 0.0 0.417 Inner and outer dimensions (cm) 7.0 Sample height (cm) -0.07216 Density atoms/Å^3? 300 Temperature for normalisation Placzek correction TABLES Total cross section source * Normalisation differential cross section filename } SAMPLE BACKGROUND { 1 1 Number of files and period number GEM45189.raw SAMPLE BACKGROUND data files } SAMPLE SiO2 { 2 1 Number of files and period number GEM45276.raw SAMPLE SiO2 data files GEM45277.raw SAMPLE SiO2 data files 1 Force calculation of sample corrections? Si 0 1.0 Sample atomic composition O 0 2.0 Sample atomic composition * 0 0 * 0 0 to specify end of composition input 0.0 0.415 Inner and outer dimensions (cm) 5.8 Sample height (cm) 2.2 Density Units: gm/cm^3? 0 Temperature for sample Placzek correction TABLES Total cross section source 1.0 Sample tweak factor 0 Top hat width (1/Å) for cleaning up Fourier Transform 0.0 Minimum radius for Fourier Transform [Å] 50.0 Qmax for Lorch window function [1/Å] 0 0 0 0 to finish specifying wavelength range of resonance 0.0 0.0 0 Exponential amplitude and decay [1/A] * 0 0 * 0 0 to specify end of exponential parameter input 1.0 Normalisation correction factor * Name of file containing self scattering as a function of wavelength [A] 0 Normalise to:Nothing } CONTAINER SiO2 { 1 1 Number of files and period number GEM45278.raw CONTAINER SiO2 data files V 0 1.0 Container atomic composition * 0 0 * 0 0 to specify end of composition input 0.415 0.4175 Inner and outer dimensions (cm) 7 Sample height (cm) -0.07216 Density atoms/Å^3? TABLES Total cross section source 1.0 Container tweak factor } GO END