Lect+23+Fall+2011

Lect+23+Fall+2011 - 10/24/2011 1 Chapter 7: The Fires of...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 10/24/2011 1 Chapter 7: The Fires of Nuclear Fission Nuclear Fission (continued) Oct. 26/2011 Review from Last Lecture • Nuclear weapons • Coal ‐ fired/nuclear power plants (TMI, Japan) 2 Types of Nuclear Radiation • Alpha ( α ) decay: involves the loss of an alpha particle from a nucleus ( He nucleus) • A decreases by 4, Z decreases by 2 (for each alpha particle emitted alpha particle emitted) • Common for elements heavier than lead (Z=82) Types of Nuclear Radiation • Beta ( β ) decay: involves loss of beta particle – It’s NOT the expulsion of a beta particle from the nucleus (no e ‐ in the nucleus!) – It’s the conversion of a neutron into a proton (in It s the conversion of a neutron into a proton (in nucleus) and the expulsion of a beta particle • Z increases by 1; mass number does not change 4 e p n 1 1 1 1 − + → 10/24/2011 2 Types of Nuclear Radiation • Gamma ( γ ) emission: high ‐ energy gamma photons emitted from an excited nucleus • Energy of atom is...
View Full Document

This document was uploaded on 10/25/2011 for the course CHEM 111 at Miami University.

Page1 / 4

Lect+23+Fall+2011 - 10/24/2011 1 Chapter 7: The Fires of...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online