KING FAHD UNIVERSITY OF PETROLEUM & MINERALS

DEPARTMENT OF PHYSICS

PHYS 422 Nuclear and Particle Physics (3-0-3)

Second Semester 2004 (032)

Homework # 6  

HW#6P1: Krane 6.17

The radioactive decay of ²³²Th leads eventually to stable ²⁰⁸Pb. A rock is determined to contain 3.65 g of ²³²Th and 0.75 g of ²⁰⁸Pb.  (a)  What is the age of the rock, as deduced from the Th/ Pb ratio?  (b)  If the rock is large, the  particles emitted in the decay processes remain trapped. If the rock were pulverized, the ’s could be collected as helium gas. At 760 mm and 0 ^oC, what volume of helium gas could be collected from this rock?

HW#6P2: Krane 8.24

The decay of  ²⁵³Es  leads to a sequence of negative-parity states in ²⁴⁹Bk with . For each state, find the permitted values of

HW#6P3: Krane 9.14

Classify the following decays according to degree of forbiddeness:

(a)       

(b)       

(c)       

(d)       

(e)       

HW#6P4: Krane 10.6

For the following  transitions, give all permitted multipoles and indicate which multipole might be the most intense in the emitted radiation.

(a)                           (d)       

(b)                           (e)       

(c)                             (f)