Additional results concerning cross-section sensitivity of tritium breeding in a fusion reactor blanket: $sup 6$Li, $sup 7$Li, and $sup 93$Nb

Technical Report · Tue Jan 01 04:00:00 EST 1974

DOI:https://doi.org/10.2172/4379593· OSTI ID:4379593

Tobias, M.; Steiner, D.

Previous work concerning cross-section sensitivity of the tritium breeding ratio showed ine effects of altering a partial cross section independently of other partial cross sections, permitting the total cross section to rise or fall. The results reported here are mostly for variations made while keeping the total cross section constant. The cases considered were for high and low values of the cross sections for /sup 6/Li(n, )t,/sup 7/Li(n, n' alpha )t, and for /sup 93/Nb(n2n) with compensatory changes in other cross sections. The general conclusions of previous work have been borne out both qualitatively and quantitatively under the present more realistic ground rules. In addition, results are reported for a modified CTR benchmark which has blanket material in place of the graphite reflector. This case shows a drop of 0.13 in /sup 6/Li productions, a rise of 0.02 in /sup 7/Li productions, and an increase of 0.15 in neutron leakage. (auth)

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-29-011660
• OSTI ID: 4379593
• Report Number(s): ORNL-TM--4201
• Country of Publication: United States
• Language: English

Related Subjects

*THERMONUCLEAR REACTORS-- BREEDING
*TRITIUM-- BREEDING
BREEDING BLANKETS
CROSS SECTIONS
Equipment
LITHIUM 6
LITHIUM 7
N70800* --Physics--Controlled Thermonuclear Research-- Thermonuclear Engineering &
NEUTRON REACTIONS
NIOBIUM 93