Nuclear Reactions Flashcards
Beta
A neutron decays to become a proton. Releases a beta particle (electron) and a neutrino.
Bottom + 1
Fission
The splitting of a nucleus into two smaller nuclei
Fusion
The joining of two smaller nuclei to form a larger nucleus
Gamma
Photons of electromagnetic energy released by a nucleus
No effect on isotope
Induced
Caused to happen by addition of a neutron to a large nucleus which therefore splits into two smaller nuclei
Isotope
Isotopes of an element have the same number of protons but different numbers of neutrons; these isotopes have identical chemical properties but different nuclear reactions
Spontaneous
Happens naturally; In nuclear fission an isotope that decays without being bombarded by neutrons
Alpha
A particle made up of two protons and two neutrons is released
Top - 4
Bottom - 2
Top number and bottom number
Top = Mass number Bottom = Atomic number
Atomic number gives
Number of protons in a nucleus
All an elements atoms have same number of protons in nucleus
Mass number gives
Total of Protons + neutrons = isotope
Isotopes of an element differ in reaction
Spontaneous and induced difference
Study Left hand side
Induced = Neutron present
Spontaneous = No neutron
Electron is ejected if
Energy of a photon is greater than the work function of the material
Surplus energy = kinetic energy
Modern photoelectric effect
Photomultipliers - sensitive detectors of light/photons
Low work function - eject when photon strikes material
Component of weight down the slope
F= mgsintheta
