Question

6. Neutron cross section depends on: 1. 2. 3. 4. on the neutron energy and the number of electrons on the type of material only on the size of the nucleus only none of the above 7. An isotope based neutron source is 1. 2. 3. 4. a mixture of rich neutron elements a combination of any isotopes an element with long half life a light element mixed with unstable heavy element 8. A gaseous detector is a device to: 1. detect only gamma radiation 2. 3. 4. shield the reactor from radiation ease the detection of neutron in a mixed field detect different type of radiation 9. A neutron reaction is: only when a neutron is absorbed by an element only when a neutron is scattered by nucleus when a neutron loses a fraction of its energy when neutron interacts with an element 1. 2. 3. 4. 10. A sample contains 2 radioactive sources, one emits gamma rays and the other one emits neutrons 1. 2. 3. 4. 1Sv (Sievert) dose from the gamma source is greater than 1Sv from the neutron source 1Gy (Gray) from the gamma source is the same as 1Gy from the neutron source 1Sv (Sievert) from the gamma source is less than 1Sv from the neutron source None of the above

Answer 1

On the neutron energy and the number of electron A mixture of rich neutron elements Direct different type of radiation When a neutron looses fraction of it energy