bei48482_FM

The most powerful tokamaks today have attained plasma temperatures of 30 keV and confinement quality n values of 2  1019 sm^3 ...

468 Appendix to Chapter 12 Appendix to Chapter 12 Theory of Alpha Decay I n the discussion of the tunnel effect in Sec. 5.10 a b ...

Theory of Alpha Decay 469 and then express it as the integral ln T 2  L 0 k 2 (r) dr 2  R R 0 k 2 (r) dr (12.34) where R 0 ...

470 Appendix to Chapter 12 From Eq. (12.35), R and so ln T   1  2 Z^1 ^2 R 01 ^2   1  2 ZE^1 ^2 (12.38) The result ...

The mass of a millicurie of^214 Pb is 3.0  10 ^14 kg. Find the decay constant of^214 Pb. The half-life of^23892 U against alp ...

12.6 Gamma Decay Determine the ground and lowest excited states of the thirty- ninth proton in^89 Y with the help of Fig. 11.18 ...

200 MeV, how many fissions occur per second to yield this power level? A particle of mass m 1 and kinetic energy KE 1 collides ...

474 CHAPTER 13 Elementary Particles Aerial view of CERN, the European particle physics laboratory near Geneva, Switzerland, wher ...

O rdinary matter is composed of protons, neutrons, and electrons, and at first glance these particles seem enough to account for ...

electric and magnetic forces can both be traced to a single interaction between charged particles. As we shall see, the electrom ...

Leptons and Hadrons Elementary particles fall into two classes, leptonsand hadrons,depending on whether they respond to the stro ...

+mc^2 –mc^2 0 E e– e+ Sea of negative-energy electrons hν +mc^2 –mc^2 E 0 (b) (a) Figure 13.2Electron-positron pair production. ...

Neutrino Antineutrino Figure 13.3Neutrinos and anti- neutrinos have opposite direc- tions of spin. motion; viewed from behind, a ...

480 Chapter Thirteen Muon decay →ee →ee (13.3) As with electrons, the positive-charge state of the muon repres ...

Table 13.3 Some hadrons and their properties. The symbol Sstands for strangeness number, discussed in Sec. 13.4. Antiparticles h ...

All baryons other than nucleons decay with mean lives of less than 10^9 s in a variety of ways, but the end result is always a ...

Collisions between high-energy protons and antiprotons produce a variety of elementary particles whose properties and decay sche ...

150 100 50 0 400 600 800 1000 Effective mass, MeV Events per 10-MeV interval ω η Figure 13.4Resonant states in the reaction p ...

13.4 ELEMENTARY PARTICLE QUANTUM NUMBERS Finding order in apparent chaos The interactions and decays of the hundreds of known el ...

Strangeness Introducing baryon and lepton numbers still left some loose ends in the world of elementary particles. In particular ...