Design and Stress Analysis of Extraterrestrial ... - The Black Vault

Table 2.3t;
flep'unitT
uins
HalINIC-
Uop~y~a C0oc6 nIYPa"- Tonaiimioe Mont-r
,aetyna Ba. ,:e p.a .p ac lla•' - 4 ()( a e T, coe tlilet Ilie C|OCTb
2ý/C.j13 sM I'
(1.) (2) (3 I cyroK) (5) (6) (7)
(8) nlAyoMlfil Pu238 a S6,4.i4. PuC; PuO 2 12,5 0,55
(9) Ueairl Csl13 7,y
3 3a. CsCI 3,9 0,325
(10) 'Ctpoiaril SrOO Vy 28n. SrTi0 3 4,8 0,112
(11) KMop"fi .Cm 244 a, n 18.. Cm 2 0.3 11,8 2,54
(12) Ko6,al'r Co( ,6y 5,3a. Co 9 0,3
(13) 1lpoteVIR Pm147 P, y 2,64. PmO 3 6,6 0,167
lk(Y" Y)I•p,, tern P, y 28,5c. C6o 2 . ,4 -1,9
( 1 5 ).Kiopii Cm. 2 4 2 a,n 162c. Cm 2 0 3 11,75 110-122
(1 6 ) nOJOHttl P021 0 .a 13Mc. Po 9,3 140-170
KEY: (1) Name; (2) Formula; (3) Decay process; (4) Half-life
(years, days); (5) Fuel compound; (6) Density g/cm 3 ; (7) Therma..
capacity W/h; (8) Plutonium; (9) Cesium; (10) Strontium; (11)
Curium; (12) Cobalt; (13) Promethium; (14) Cerium; (15) Cvrium;
(16) Polonium.
Designptions: n = years; c = days.
Design of an ampoule fo'r an isotopic heat
source
A typical design is shown in Fig. 2.60. The isotopic source 1
is placed in a shell 2 of steel, molybdenum or tantalum. This shell
can be covered inside with a protective material (tantalum carbide,
tungsten).
A peculiarity of isotopes is that immediately after they are
obtained in the breeding channel of a reactor, they continuously
radiate particles and heat. Therefore, after enclosing the isotope
in a shell and welding, which is done automatically using a
manipulator, it must be placed in a medium with intense heat
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