PulsedDecay Class Reference

This class performs the decay of species 1 into species A and B via a user-specified rate. dnA/dt = +nu(t)*n1(t)= dnB/dt dn1/dt = -nu(t)*n1(t) ==> nA(t+dt) - nA(t) = n1(t)*(1 - exp(-nu(t)*t)) For example, this can represent ionization of species 1 from a laser pulse. The user-specified decay rate nu is a function of space and time. The velocity of the product particles is set to a random parent species particle plus a direction-dependent thermal part obtained from a user-specified normal distribution. More...

#include <PulsedDecay.H>

Inheritance diagram for PulsedDecay:

Public Member Functions
	PulsedDecay (std::string const &collision_name, MultiParticleContainer const *mypc)
	~PulsedDecay () override=default
	PulsedDecay (PulsedDecay const &)=delete
PulsedDecay &	operator= (PulsedDecay const &)=delete
	PulsedDecay (PulsedDecay &&)=delete
PulsedDecay &	operator= (PulsedDecay &&)=delete
void	doCollisions (amrex::Real cur_time, amrex::Real dt, MultiParticleContainer *mypc) override
Public Member Functions inherited from CollisionBase
	CollisionBase (const std::string &collision_name)
	CollisionBase (CollisionBase const &)=delete
	CollisionBase (CollisionBase &&)=delete
CollisionBase &	operator= (CollisionBase const &)=delete
CollisionBase &	operator= (CollisionBase const &&)=delete
virtual	~CollisionBase ()=default
void	BackwardCompatibility ()
int	get_ndt () const
CollisionSteppingMode	get_collision_stepping_mode () const
bool	use_global_debye_length () const

Private Attributes
amrex::Vector< std::string >	m_product_species
amrex::ParticleReal	m_fixed_product_weight
amrex::GpuArray< amrex::ParticleReal, 3 >	m_productA_thermal_speed
amrex::GpuArray< amrex::ParticleReal, 3 >	m_productB_thermal_speed
amrex::Parser	m_decay_rate_parser
amrex::ParserExecutor< 4 >	m_decay_rate_func

Additional Inherited Members
Protected Attributes inherited from CollisionBase
std::string	m_collision_name
amrex::Vector< std::string >	m_species_names
int	m_ndt = 1
CollisionSteppingMode	m_collision_stepping_mode = CollisionSteppingMode::Supercycle
bool	m_use_global_debye_length = false

Detailed Description

This class performs the decay of species 1 into species A and B via a user-specified rate. dnA/dt = +nu(t)*n1(t)= dnB/dt dn1/dt = -nu(t)*n1(t) ==> nA(t+dt) - nA(t) = n1(t)*(1 - exp(-nu(t)*t)) For example, this can represent ionization of species 1 from a laser pulse. The user-specified decay rate nu is a function of space and time. The velocity of the product particles is set to a random parent species particle plus a direction-dependent thermal part obtained from a user-specified normal distribution.

Constructor & Destructor Documentation

PulsedDecay() [1/3]

PulsedDecay::PulsedDecay	(	std::string const &	collision_name,
		MultiParticleContainer const *	mypc )

~PulsedDecay()

PulsedDecay::~PulsedDecay ( )

overridedefault

PulsedDecay() [2/3]

PulsedDecay::PulsedDecay ( PulsedDecay const & )

delete

PulsedDecay() [3/3]

PulsedDecay::PulsedDecay ( PulsedDecay && )

delete

Member Function Documentation

doCollisions()

void PulsedDecay::doCollisions ( amrex::Real cur_time, amrex::Real dt, MultiParticleContainer * mypc )

overridevirtual

Perform the collisions

Parameters

cur_time	Current time
dt	Time step size
mypc	Container of species involved

Reimplemented from CollisionBase.

operator=() [1/2]

PulsedDecay & PulsedDecay::operator= ( PulsedDecay && )

delete

operator=() [2/2]

PulsedDecay & PulsedDecay::operator= ( PulsedDecay const & )

delete

Member Data Documentation

m_decay_rate_func

amrex::ParserExecutor<4> PulsedDecay::m_decay_rate_func

private

m_decay_rate_parser

amrex::Parser PulsedDecay::m_decay_rate_parser

private

m_fixed_product_weight

amrex::ParticleReal PulsedDecay::m_fixed_product_weight

private

m_product_species

amrex::Vector<std::string> PulsedDecay::m_product_species

private

m_productA_thermal_speed

amrex::GpuArray<amrex::ParticleReal,3> PulsedDecay::m_productA_thermal_speed

private

m_productB_thermal_speed

amrex::GpuArray<amrex::ParticleReal,3> PulsedDecay::m_productB_thermal_speed

private

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The documentation for this class was generated from the following files:

• /home/docs/checkouts/readthedocs.org/user_builds/warpx/checkouts/6814/Source/Particles/Collision/PulsedDecay/PulsedDecay.H
• /home/docs/checkouts/readthedocs.org/user_builds/warpx/checkouts/6814/Source/Particles/Collision/PulsedDecay/PulsedDecay.cpp