/*- * COPYRIGHT 2016 DIAMOND LIGHT SOURCE LTD.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.dawnsci.surfacescatter;
import org.apache.commons.math3.distribution.NormalDistribution;
import org.eclipse.january.dataset.ILazyDataset;
/**Calculates the geometric correction factors for X-ray reflectivity. Outputs a single double.
*
*
*/
public class GeometricCorrectionsReflectivityMethod {
public static double reflectivityCorrectionsBatch(ILazyDataset dcdtheta, int k, double angularfudgefactor, double BeamHeight, double footprint) throws Exception {
double theta = ScanMetadataForDialog.getTheta(dcdtheta, k);
NormalDistribution beamfootprint = new NormalDistribution(0, (1e-3*BeamHeight/2*Math.sqrt(2*Math.log(2) - 0.5)));
double areaCorrection = 2*(beamfootprint.cumulativeProbability((footprint*Math.sin((theta + angularfudgefactor)*Math.PI/180))/2));
return areaCorrection;
}
}
//TEST