gov.nist.microanalysis.EPQLibrary
Class Gas

java.lang.Object
  gov.nist.microanalysis.EPQLibrary.Composition
      gov.nist.microanalysis.EPQLibrary.Material
          gov.nist.microanalysis.EPQLibrary.Gas

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable

public class Gas
extends Material

Implements a gas based on the ideal gas law. It should be noted that this model of gases is niave (from many perspectives). The model views all interactions as essentially atomic. No molecular considerations are included except in as much as a mole of O2 has twice as many atoms as a mole of O.

Copyright: Pursuant to title 17 Section 105 of the United States Code this software is not subject to copyright protection and is in the public domain

Institution: National Institute of Standards and Technology

Version:

1.0

Author:

Nicholas

See Also:

Serialized Form

Field Summary

static double	MOLAR_VOLUME
static double	RYDBERG_CONSTANT
static double	STANDARD_PRESSURE
static double	STANDARD_TEMPERATURE

Fields inherited from class gov.nist.microanalysis.EPQLibrary.Composition

mHashCode, STOICIOMETRY, UNDETERMINED, WEIGHT_PCT

Constructor Summary

protected	Gas()
	Gas(Element[] elms, int[] stoic, double pressure, double temperature, java.lang.String name) Constructs a single molecular gas such as N2, O2, Ar, CO2 etc.

Method Summary

java.lang.Object	clone()
double	getMassPerSubunit() getMassPerSubunit - For used with materials defined by stoichiometry.
double	getPressure() getPressure - returns the pressure (in pascal)
double	getTemperature() getTemperature - Returns the temperature (in kelvin)
protected void	replicate(Gas gas)
void	setTemperature(double newTemp) setTemperature - Modifies the temperature of the gas and updates the pressure assuming constant volume.

Methods inherited from class gov.nist.microanalysis.EPQLibrary.Material

atomsPerCubicMeter, clear, compareTo, defineByMaterialFraction, defineByWeightFraction, descriptiveString, equals, getDensity, hashCode, renormalize, replicate, setDensity

Methods inherited from class gov.nist.microanalysis.EPQLibrary.Composition

addElement, addElement, addElementByStoiciometry, containsElement, defineByMoleFraction, defineByWeightFraction, defineByWeightFraction, difference, elementSet, fromXML, getElementCount, getElementSet, getName, getNthElementByAtomicFraction, getNthElementByWeight, getOptimalRepresentation, massAbsorptionCoefficient, moleFraction, removeElement, replicate, setName, stoiciometryAvgAtomicNumber, sumWeightPercent, toString, toXML, weightAvgAtomicNumber, weightPercent

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

RYDBERG_CONSTANT

public static final double RYDBERG_CONSTANT

See Also:

Constant Field Values

MOLAR_VOLUME

public static final double MOLAR_VOLUME

See Also:

Constant Field Values

STANDARD_PRESSURE

public static final double STANDARD_PRESSURE

See Also:

Constant Field Values

STANDARD_TEMPERATURE

public static final double STANDARD_TEMPERATURE

See Also:

Constant Field Values

Constructor Detail

Gas

protected Gas()

Gas

public Gas(Element[] elms,
           int[] stoic,
           double pressure,
           double temperature,
           java.lang.String name)

Constructs a single molecular gas such as N2, O2, Ar, CO2 etc.

Parameters:

elms - The elemental constituents

stoic - The molecular stoiciometry

pressure - in pascal

temperature - in kelvin

name - a human-friendly name

Method Detail

getMassPerSubunit

public double getMassPerSubunit()

getMassPerSubunit - For used with materials defined by stoichiometry. Returns the mass of a single molecular subunit whether it be a gas such as N2 or a crystal unit cell.

Returns:

- The mass in kg per molecular subunit

setTemperature

public void setTemperature(double newTemp)

setTemperature - Modifies the temperature of the gas and updates the pressure assuming constant volume.

Parameters:

newTemp - In kelvin

getTemperature

public double getTemperature()

getTemperature - Returns the temperature (in kelvin)

Returns:

The temperature in kelvin

getPressure

public double getPressure()

getPressure - returns the pressure (in pascal)

Returns:

The pressure in pascal

replicate

protected void replicate(Gas gas)

clone

public java.lang.Object clone()

Overrides:

clone in class Material