-
Notifications
You must be signed in to change notification settings - Fork 122
/
Keren.h
47 lines (40 loc) · 1.66 KB
/
Keren.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2016 ISIS Rutherford Appleton Laboratory UKRI,
// NScD Oak Ridge National Laboratory, European Spallation Source,
// Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#pragma once
#include "MantidAPI/IFunction1D.h"
#include "MantidAPI/ParamFunction.h"
#include "MantidCurveFitting/DllConfig.h"
namespace Mantid {
namespace CurveFitting {
namespace Functions {
/** Keren : Keren fitting function for muon scientists
Generalization of the Abragam relaxation function to a longitudinal field
See Phys Rev B, 50, 10039 (1994)
*/
class MANTID_CURVEFITTING_DLL Keren : public API::ParamFunction, public API::IFunction1D {
public:
/// Name of function
std::string name() const override { return "Keren"; }
/// Category for function
const std::string category() const override { return "Muon\\MuonSpecific"; }
/// Set active parameter
void setActiveParameter(size_t i, double value) override;
/// Get active parameter
double activeParameter(size_t i) const override;
protected:
/// Evaluate the function at the given values
void function1D(double *out, const double *xValues, const size_t nData) const override;
/// Initialize parameters
void init() override;
/// Time-dependent muon polarization
double polarization(const double delta, const double larmor, const double fluct, const double time) const;
/// Relaxation form
double relaxation(const double delta, const double larmor, const double fluct, const double time) const;
};
} // namespace Functions
} // namespace CurveFitting
} // namespace Mantid