Calculate the cross-sectional area for the Samarium-149 nucleus. Using the equations presented in Chapter 3 and the thermal absorption cross sections presented in Appendix C, estimate how many times...

Calculate the cross-sectional area for the Samarium-149 nucleus. Using the equations presented in Chapter 3 and the thermal absorption cross sections presented in Appendix C, estimate how many times larger the effective thermal absorption cross section is for a passing neutron than the cross-sectional area of the Samarium nucleus itself.