OpticalData.hh

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#ifndef G_OPTICAL_DATA_H
#define G_OPTICAL_DATA_H
 
#include <string>
#include <vector>
 
namespace Garfield {
 
/// Photoabsorption cross-sections for some gases.
 
class OpticalData {
 public:
  /// Constructor
  OpticalData();
  /// Destructor
  ~OpticalData() {}
 
  /// Check whether optical data have been implemented for a given gas.
  bool IsAvailable(const std::string& material) const;
  /// Photo-absorption cross-section and ionisation yield at a given energy.
  bool GetPhotoabsorptionCrossSection(const std::string& material,
                                      const double e, double& cs, double& eta);
 
  void EnableDebugging(const bool on = true) { m_debug = on; }
 
 private:
  static constexpr double OscToPacs = 8.067283e-18;
  static constexpr double Mbarn = 1.e-18;
 
  bool m_debug = false;
 
  bool PhotoAbsorptionCsNeon(const double e, double& cs, double& eta);
  bool PhotoAbsorptionCsArgon(const double e, double& cs, double& eta);
 
  bool PhotoAbsorptionCsCO2(const double e, double& cs, double& eta);
 
  bool PhotoAbsorptionCsMethane(const double e, double& cs, double& eta);
  bool PhotoAbsorptionCsEthane(const double e, double& cs, double& eta);
  bool PhotoAbsorptionCsButane(const double e, double& cs, double& eta);
  bool PhotoAbsorptionCsAcetylene(const double e, double& cs, double& eta);
  bool PhotoAbsorptionCsCF4(const double e, double& cs, double& eta);
 
  bool PhotoAbsorptionCsNitrogen(const double e, double& cs, double& eta);
};
}
 
#endif