news_050211

News_050211 - -E system Δ m m parts-m sys = E b c 2 nucleus Δ m = Z m H Nm n-m atom where m H = 1 007825 u Stability Can the nucleus lower its

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Stuff for Monday, May 2, 2011 PS #9 returned up front, PS #10 due. Quiz #5 returned up front. Quiz average: 8.5 ( read carefully! ) Midterm: 2 hours from 6:30pm to 10:00pm tomorrow here. Does everyone have the midterm handout? Annotate as desired. Schedule: Review tomorrow, lecture Wed. and Thur., no class Friday Stuff about nuclei and radioactivity: Nuclei: A Z X where A nucleons = Z protons + N neutrons Radius: r r 0 A 1 / 3 with r 0 = 1 . 2 fm closest α : r min = k ( 2 e )( Ze ) / K 0 1 u = atomic mass unit 1 12 ( mass of 12 6 C ) = 931 . 48 MeV / c 2 m p = 1 . 007277 u m n = 1 . 008665 u m e = 0 . 0005486 u Binding energy E b E parts
Background image of page 1

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

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

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

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: -E system , Δ m ≡ m parts-m sys = E b / c 2 nucleus: Δ m = Z m H + Nm n-m atom where m H = 1 . 007825 u Stability: Can the nucleus lower its energy by radioactive decay? Decays: alpha, beta (neutron β-, proton β + , EC) = ⇒ ν or ν , gamma Unstable nuclei Check Table of Nuclides (google, e.g., http://atom.kaeri.re.kr/ ) Binding energy calculation: (6*1.007825u + 9*1.008665u-15.0105993u)*931.48 MeV/u = 106.501 MeV Coulomb Energy Symmetry Energy...
View Full Document

This note was uploaded on 06/03/2011 for the course H 133 taught by Professor Furnstahl during the Spring '11 term at Ohio State.

Page1 / 5

News_050211 - -E system Δ m m parts-m sys = E b c 2 nucleus Δ m = Z m H Nm n-m atom where m H = 1 007825 u Stability Can the nucleus lower its

This preview shows document pages 1 - 5. Sign up to view the full document.

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