1000 Solved Problems in Modern Physics

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Chapter 9 Particle Physics – I 9.1 Basic Concepts and Formulae ................................ Interactions and decay Probabili ...

486 9 Particle Physics – I Energy in the center of mass system (CMS) In the collision of particle of massm 1 , of total energyE ...

9.1 Basic Concepts and Formulae 487 ω ω 0 = m 0 m = 1 γ (9.13) Synchrotron The synchrotron radiation loss per turn ΔE= 4 π 3 R e ...

488 9 Particle Physics – I G.M counter E= V rln(b/a) (9.19) whereEis the electric field,Vis the applied voltage,ris the distance ...

9.2 Problems 489 Also, calculate the numerical values for the above expressions whereα = 1 /137 is the fine structure constant. ...

490 9 Particle Physics – I 9.11 Estimate the thickness of iron through which a beam of neutrinos with energy 200 GeV must travel ...

9.2 Problems 491 9.18 From the data given calculate the mass of the hyper-fragmentΛHe^5 Mass ofΛhyperon is 1115.58 MeV/c^2 ,Mass ...

492 9 Particle Physics – I 9.26 Heavy mesons,M= 950 meproduced in nuclear interactions initiated by a more energetic beam ofπ-me ...

9.2 Problems 493 measurements would you make to identify the elastic scattering in a (Σ−p) collision? [University of Manchester] ...

494 9 Particle Physics – I 9.39 Estimate the gas multiplication required to count a 2 MeV proton which gives up all its energy t ...

9.2 Problems 495 ionizing potential for Argon is 15.7 V, calculate the maximum voltage which must be applied to produce the aval ...

496 9 Particle Physics – I combined capacitance of 45 PF. If an 8-mV output pulse is desired whenever a 55-keV beta particle is ...

9.2 Problems 497 9.61 In an experiment using a Cerenkov counter, one measures the kinetic energy of a given particle species asE ...

498 9 Particle Physics – I 9.68 A 10 GeV proton is directed toward the centre of the earth when it is at dis- tance of 10^3 eart ...

9.2 Problems 499 9.78 In a betatron of diameter 72 in operating at 50 c/s the maximum magnetic field is 1.2Wb/m^2. Calculate (a) ...

500 9 Particle Physics – I 9.86 A synchro-cyclotron has a pole diameter of 4 m and a magnetic field of 1 .5Wm−^2 (15,000 G). Wha ...

9.2 Problems 501 9.95 A synchrocyclotron accelerates protons to 500 MeV.B=18 kG,V=10 kV andφs= 300. To find (a) the radius of th ...

502 9 Particle Physics – I 9.102 What is the lengthLof the longest drift tube in a linac which operating at a frequency off=25 M ...

9.3 Solutions 503 9.109 At a collider, a 20 GeV electron beam collides with a 300 GeV proton beam at a crossing angle of 10◦. Ev ...