simulations.objects
Class ElectricOscillatingDipole

java.lang.Object
  simulations.objects.BaseObject
      simulations.objects.ElectricDipole
          simulations.objects.ElectricOscillatingDipole

public class ElectricOscillatingDipole

extends ElectricDipole

An extension of the ElectricDipole class that replaces the constant electric dipole moment with one that is oscillating. We assume that the dipole is fixed in direction along the z-axis, with its magnitude changing as defined below.

Version:

1.0

Author:

Andreas Sundquist

Field Summary

double	omega The angular frequency of the oscillating dipole
double	p0 The constant part of the dipole moment of the oscillating dipole
double	p1 The sinusoidal part of the dipole moment of the oscillating dipole
double	phase The phase shift in the sinusoidal time depedence of the oscillating dipole

Fields inherited from class simulations.objects.ElectricDipole

p, t, v, x

Constructor Summary

ElectricOscillatingDipole(Vec3 x, Vec3 p, double p0, double p1, double omega, double phase)
Constructs an ElectricOscillatingDipole centered at "x" at t = 0.

Method Summary

Vec3	getDDP(double dt) Returns the second time derivative of the dipole moment at a time retarded by dt.
Vec3	getDP(double dt) Returns the first time derivative of the dipole moment at a time retarded by dt We use the method getT to find out the current time of the dipole
Vec3	getP(double dt) Returns the dipole moment at a time retarded by dt.

Methods inherited from class simulations.objects.ElectricDipole

Bfield, Efield, Evolve, getT

Methods inherited from class simulations.objects.BaseObject

Bfield, Efield, Pfield, Pfield

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

p0

public double p0

The constant part of the dipole moment of the oscillating dipole

p1

public double p1

The sinusoidal part of the dipole moment of the oscillating dipole

omega

public double omega

The angular frequency of the oscillating dipole

phase

public double phase

The phase shift in the sinusoidal time depedence of the oscillating dipole

Constructor Detail

ElectricOscillatingDipole

public ElectricOscillatingDipole(Vec3 x,
                                 Vec3 p,
                                 double p0,
                                 double p1,
                                 double omega,
                                 double phase)

Constructs an ElectricOscillatingDipole centered at "x" at t = 0. The parameter "p" is ignored, because we are creating a dipole which is always along the z axis

Method Detail

getP

public Vec3 getP(double dt)

Returns the dipole moment at a time retarded by dt. We use the method getT to find out the current time of the dipole

Overrides:

getP in class ElectricDipole

getDP

public Vec3 getDP(double dt)

Returns the first time derivative of the dipole moment at a time retarded by dt We use the method getT to find out the current time of the dipole

Overrides:

getDP in class ElectricDipole

getDDP

public Vec3 getDDP(double dt)

Returns the second time derivative of the dipole moment at a time retarded by dt. We use the method getT to find out the current time of the dipole

Overrides:

getDDP in class ElectricDipole