Chapter2_11 - hu MeV c gram 8 27 2 10 3 . 3 10 1 . 1 ) 1 (...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
PHY3063 R. D. Field Department of Physics Chapter2_11.doc University of Florida Converting Mass to Energy Proton-Antiproton Annihilation ( γ + + p p ): The most efficient for of mass to energy conversion occurs when particles and anti-particles annihilate into pure energy. For example, proton-antiproton annihilation at rest results in the following amount of energy: hu GeV c m p 16 2 10 9 . 5 2 2 × Matter-Antimatter Annihilation (1 gram): Suppose 1 gram of matter annihilates with 1 gram of antimatter:
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: hu MeV c gram 8 27 2 10 3 . 3 10 1 . 1 ) 1 ( 2 The Sun: The sun is 1/3 hydrogen by weight and burns hydrogen through a process in which four protons and two electrons fuse together to form an alpha particle ( = helium nucleus = 2 protons + 2 neutrons) releasing the following amount of energy: MeV c m m m p e 26 ) 4 2 ( 2 + Power a 150 Watt light for 38,000 years! Large energy density not large energy!...
View Full Document

This note was uploaded on 05/29/2011 for the course PHY 3063 taught by Professor Field during the Spring '07 term at University of Florida.

Ask a homework question - tutors are online