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:
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.