Смелов В.В. Лекции по теории переноса нейтронов

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(24.12), aerpynao

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aHaJIHTHqe-

CKHe

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.llJlH ; B

JJ.o:

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(i\!1

- 1)2 M + 1 . - 2

&= 1 - . 4M s = 1 - 2M In M _ 1;

P-

= 3M ·

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reneps-uapaaceaas

(24.14) B

cacrexy

(24.8),

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sane

= 1 1v(u') E

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t r

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ceseaae",

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lIaH

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(24.15)

sexropnyio

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ypasaeaae OTHOCHTeJlbHO

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= VDV

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(

+2D

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o On rs

rne

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= n

V'Cf

•

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(24.16),

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ypasaenae

(21.12), pemator OObIlJHO

Me-

TO,nOM

HTepaUHH

HCTOqHHKOB, noncraaass npenazrymee

npHtlJIHJKeHHe

TepMHH

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ceseaaes

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peaxropos,

12-301 ' 165

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(24.16)

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ep~n)

(r,

u) B" peayasrare peure-

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(eEsept)= V D V

ffl.

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+Qt, (24.17)

Q.(r,

u)=

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u')ep~n-l)(r,

u'ydu',

-00

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saaneaae

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onpeneaserca

TOMy

iKe peuerrry, tITO H

B §

21.

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aprysrear 't' H

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nOrJIOmeHHeM

.erenna»). Flepexeaayio

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npHHBToH83hIsaTb

eospactou

HeHTpOHOB,

caxo

ypasne-

HBe

--dutPtPySUOHHO-B,ospaCTHbIM.

§ 25.

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qEHHOCTM HEATPOHA.

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euy

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to B T01JKe

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to,

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(r,

t) P

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t 0

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• H P

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(25.1) CXO,nSlTCH. B

epopMe

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.(25.1)

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C KO-

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reopaa

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a p - C

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neneaae),

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(i-to),

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V B

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t=t.

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(25.2)

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(25.1) <PYHKUHIO p

3a$HKCHpO-

ears,

TO'

3TO

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cp,

nonycrauoa

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aurerpana

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(25.1),

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nepsoxy

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nocaorpax

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[cp]

(25.1) C eecosoa

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t)_{Ea(V)nPHrEWHtl~t~t2;

p r, v. , -

o BO

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secosoa

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(25.2).

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t),

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to B

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K paccsuirpueaenouu ljJyflKquoHaJlY **.

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06'beMe

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** B nOCJIe.ll.HeM TO>K,lI.eCTBe HH,lI.eKC «0» y

nepexeanux

v, Q H t onymea,

168·

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0 B

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paccxarpaaaexoro

p-npouecca,

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113

onpenenenas

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fLU

t1t eocnpouseenuce ea cner

rex

ace enquiennux Q

neiitponoe

8 pe-

ayAbTaTe

peakuuu oenenun. .

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HeH-

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anymeaaux

npoxonar

nyrs

vAt,

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r'=r+v~to

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(npa

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HeHTpoHoB.

Bupasceane

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= QvlltE

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(x)-

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~x)

c Q.; J

(x)

- c Q, oN H

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113 lIHCJIa Q.

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(~v'

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v) Au'AQ' HeHTpoHoB. nOCKOJIbKY paccessae aefrrpoaoa

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B JIIOOOH

TOlJKe

ye}KJ(y

r H

r',

ne~HOCTb

KaJKAOrO

HeHTpoHoB,

OKa3aBWHXCB B

pe-

syJlhTaTe

nymce

(~v'~O')t7',O"

6YAeT

p 33HOH. O.nH3KO

npa

MaJION

/It

scex

3THM

HeHTpoHaM

M01KHO npanacars cpe,nHIOIO

ueHHOCTb,

OTHeceH-

169