Class NuclearPhysics

java.lang.Object

org.episteme.natural.physics.nuclear.NuclearPhysics

public class NuclearPhysics
extends Object

Nuclear physics calculations.

Since:

1.0

Author:

Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

Field Summary

Fields

Modifier and Type	Field	Description
static final Real	C	Speed of light (m/s)
static final Real	MASS_NEUTRON	Mass of neutron (kg)
static final Real	MASS_PROTON	Mass of proton (kg)

Constructor Summary

Constructors

Constructor	Description
NuclearPhysics()

Method Summary

Modifier and Type	Method	Description
static Real	bindingEnergySEMF(int A, int Z)	Calculates the binding energy of a nucleus (Semi-Empirical Mass Formula / Weizsaecker).
static Real	decayConstant(Real halfLife)	Calculates decay constant from half-life. lambda = ln(2) / T_half
static Real	radioactiveDecay(Real N0, Real decayConstant, Real time)	Calculates remaining quantity after time t.

Methods inherited from class Object

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

Field Details

MASS_PROTON

public static final Real MASS_PROTON

Mass of proton (kg)

MASS_NEUTRON

public static final Real MASS_NEUTRON

Mass of neutron (kg)

C

public static final Real C

Speed of light (m/s)

Constructor Details

NuclearPhysics

public NuclearPhysics()

Method Details

bindingEnergySEMF

public static Real bindingEnergySEMF(int A,
 int Z)

Calculates the binding energy of a nucleus (Semi-Empirical Mass Formula / Weizsaecker). B = aV*A - aS*A^(2/3) - aC*Z^2/A^(1/3) - aA*(A-2Z)^2/A + delta(A,Z)

Parameters:

A - Mass number

Z - Atomic number

Returns:

Binding energy in Joules (approx)

decayConstant

public static Real decayConstant(Real halfLife)

Calculates decay constant from half-life. lambda = ln(2) / T_half

radioactiveDecay

public static Real radioactiveDecay(Real N0,
 Real decayConstant,
 Real time)

Calculates remaining quantity after time t. N(t) = N0 * exp(-lambda * t)