The mass attenuation coefficient for concrete density r 235

Assignment Help Physics

Reference no: EM13585834

Problem1.

The mass attenuation coefficient for concrete (density r= 2.35 g/cm3) for 600 keV photons is 0.08 cm2/g.

a) What is the probability that a 600 keV photon, normally incident on a thick, flat concrete shield will reach a depth of 15 cm without having an interaction?

b) What is the probability that an incident photon will reach a depth of 30 cm without interacting?

Problem2.

Assuming that you are designing a Boron (10B) slab shield on the outer region of a neutron source 'pig' to hold a neutron source. Assume that the neutron flux is 100% thermal at the outer surface of the pig. The capture thermal cross section of the Boron is Sigma=759 barn.

a) What thickness of boron shield is required that no more than 1% of the thermal flux penetrates the outer surface of the shield?

b) Calculate the absorption rate?

Problem3.

A GM counter has a window diameter of 5 cm. A point source is placed 6 cm from the surface of the window.

a) What is the geometrical efficiency of this set-up?

b) A particle of 1MeV ionizes the gaz inside the tube, what is the primary number of (e-, ions) create in the gas if one pair of (e-, ion) requires 20eV.

c) 2 particles with different energies hit the GM, how many pulses you can see at the output of the detector? Can you differentiate between the 2 particles in terms of energy?

Reference no: EM13585834

Questions Cloud

Find the derivative of this function if you print this page : 1. annual revenue for a company is given by this formulareveue t t2 -12t 27where revenuet is the annual revenue for

You place 5000 in a saving account earning 250 interest : you place 5000 in a saving account earning 2.50 interest compounded annually. how much will you have at the end of four

Ion products uses a job order costing system overhead costs : ion products uses a job order costing system. overhead costs are applied to jobs on the basis of machine hours. at the

Jim bingham is considering starting a small catering : jim bingham is considering starting a small catering business. he would need to purchase a delivery van and various

The mass attenuation coefficient for concrete density r 235 : problem1.the mass attenuation coefficient for concrete density r 2.35 gcm3 for 600 kev photons is 0.08 cm2g.a what is

Compute the unit costs for materials and conversion costs : goode company has the following production data for selected months.ending work in process monthbeginning work in

Oklahoma manufacturing company uses a standard cost system : oklahoma manufacturing company uses a standard cost system. in 2012 28400 units were produced. each unit took several

The length l width w and height h of a box change with time : the length l width w and height h of a box change with time. at a certain instant the dimensions are l 1 m and w h 2

A block hangs from a string from the outside rood of a van : a block hangs from a string from the outside rood of a van. when the van rounds a corner of radius equal to 150cm at a

User Account

All Pages