lnteraction of Neutrons lyith S{atter
Probleml.
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both beams is 2xlOrln/cm3.
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'fwo beams of l-ev neutrons intersect at an angle of g0". The rJensity of neutrons in a) Calculate the intensity of each beam. b) what is the neutron flux where trre bcanrs intersect?
t,
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area and 0'l ctn thick. fltcrc l'c 0.048xlOrt at.nrs p*r'.,n1'inir1.'l*e" ij cross-section at the energy of the beanr is 4.5 b"
A monoencrgctic bcam oI ttctrtrons- 4-x,1,1)t0 n/(s cur2). impingcs on a target I cm2 in rrr" total I
ilii:
Problem 2.
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a) What is the nracroscopic cross-section? b] fg* llany neutron inieracti.ns per second occnr'in the target? c) What is the collision den.sity lcoilision rate)?
Problern 3.
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The I entitter ]tat 6]*tr'tife 2.3 min) can he proclucecl by the raclioactive capture of , neutronsby28Al.r.neo.ozs:-"V.,o,,-,ection1brjtlrisreactionis0.23b.Supposethata.. small,0.0l-g aluminurn targer is'placed in a beam "ro.ozi:-rv n",,r*i 3;jtF;i;;X rvhich strikes the entire target. Calculate: a) The neutron rlensity in lhc bcam: b) The *1r, which ttAl
is produced.
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A beam of 2-l\'tcv neutrons is inciclerit on a.slah.ofJreavy.,r,r,';rter (D2o). TSe,totat;;:_!,i++ cross-section of deuterium and oxygen at this energy are z.iand 1.6 b, respectively. . , a)Whatistlremacrosbopictotilcross.sectionofheavywaterat2MeV? ,)H:il*fk:rrrrsttheslabbetoreclttccthcintensity,ir.tr'"uncollidedbeambya
in the slab. r.vhat is the relativeprobability
Problem 4.
