At what neutron energy is the cross section for the 3He(n,p) reaction equal to the thermal-neutron cross section for the 6Li(n,) reaction?
At what neutron energy is the cross section for the 3He(n,p) reaction equal to the thermal-neutro...
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:...
Which fission product has the highest thermal neutron absorption cross section? 1-134 Xe-135 Pm-149 Sm-149
Find the energy released in the reaction ^6Li(n,alpha)^3H
1) Calculate the de Broglie wavelength of a thermal neutron that has a kinetic energy of about 6.31X10-21 J. (Express your answer to three significant figures.) nm Submit
Activity 27-2. Nuclear forces and nuclear binding energy [Accompanies Section 27-2] The illustration shows two different nuclei that contain three 3H: 1 proton (p), 2 neutrons (n) nucleons. ?H (hydrogen-3) has one proton and two neutrons, n pn and He (helium-3) has two protons and one neutron. For the + purposes of this problem, treat the nucleons in each nucleus as lying along a line, as shown. 3He: 2 protons (p), 1 neutron (n) р n р (a) Rank the...
In addition to its rest energy, a moving proton (p') has kinetic energy. This proton collides with a stationary proton (p), and the reaction forms a stationary neutron (n), a stationary proton (p), and a stationary pion (π+), according to the following reaction: p' + p → n + p + π+. The rest energy of each proton is 938.3 MeV, and the rest energy of the neutron is 939.6 MeV. The rest energy of the pion is 139.6 MeV....
Find the energy Q released in the fusion reaction. (Note that the reaction below is between nuclei. For the atomic masses, see this table. The mass of an electron is 0.00054 1H+3He → 4He + e+ + ν MeV Find the energy Q released in the fusion reaction. (Note that the reaction below is between nuclei. For the atomic masses, see this table. The mass of an electron is 0.00054 1H+3He → 4He + e+ + ν MeV
16 The thermal energy available to a chemical reaction increases with increasing temperature. What is the very simple equation you would use to determine thermal energy at any particular temperature? Thermal energy = 17. Water is the solvent for your reaction. What is the temperature of the reaction under reflux?
3. Consider a thermal neutron induced fission in 235U that leads to production of the ission fragment 137Cs, three neutrons, and a second fission fragment. Assume the prompt gamma ray energy is negligible. (a) What is the atomic number of the second fission fragment? [10 pointsl (b) What is the mass number of the second fission fragment? [10 pointl (c) What is the Q-value for this reaction? [20 poins] (d) What is the Coulombic threshold for this reaction? 10 points...
Problem 1. Given a n-p-n bipolar junction transistor, draw the energy band diagrams for (a) thermal equilibrium and (b) active bias cases. Use usual notations to label various energy levels.