Table 8.

Error-weighted mean isotopic deviations (χ²) of optimized mixtures of fractionated SW, HL^a and S^b from Q-gases^c. First line in each section demonstrates the large difference between SW and Q. Second line correspond to mass fractionated SW without addition of presolar components, which are taken into account in 3-rd and 4th lines. Shown fractions are for major isotopes: ⁸⁴Kr and ¹³²Xe.

Starting SW-Xe composition	SW-Xe fractionated by (‰)	Xe-HL addition (%)	Xe-S addition (%)	χ2
Lunar regolithd,e	≡ 0	≡ 0	≡ 0	32
	10.5	≡ 0	≡ 0	2.2
	10.2	1.5	≡ 0	0.22
	10.2	1.4	−0.1	0.20
Genesis, Al-collectorsf	≡ 0	≡ 0	≡ 0	150
	10.9	≡ 0	≡ 0	9.4
	8.1	1.5	≡ 0	1.8
	8.4	1.5	0.15	1.5
Genesis current best estimate (this work)	≡ 0	≡ 0	≡ 0	160
	11.1	≡ 0	≡ 0	10
	8.0	1.6	≡ 0	1.8
	8.2	1.6	0.1	1.6
SW-Kr composition	SW-Kr fractionated by (‰)	Kr-HL addition %	Kr-S addition (%)	χ2
Lunar regolithd,e	≡ 0	≡ 0	≡ 0	63
	8.5	≡ 0	≡ 0	2.2
	6.9	2.6	≡ 0	1.9
	4.3	5.4	0.4	0.8
Genesis current best estimate (this work)	≡ 0	≡ 0	≡ 0	190
	10.2	≡ 0	≡ 0	8.7
	10.1	0.1	≡ 0	8.7
	6.3	4.4	0.4	0.7

^aHuss and Lewis, 1994.

^bProductions of s-process isotopes ⁸⁶Kr and ⁸⁰Kr are neutron flux and temperature dependent. Ratios ⁸⁶Kr/⁸⁴Kr and ⁸⁰Kr/⁸⁴Kr vary with the grain size (Lewis et al., 1994). Following Gilmour (2010) we assume the median values of these ratios: 0.83 and 0.02 respectively from the reported ranges of ⁸⁶Kr/⁸⁴Kr and ⁸⁰Kr/⁸⁴Kr (Ott, 2002).

^cBusemann et al., 2000.

^dPepin et al., 1995.

^eSimilar to minimization made by Gilmour, 2010.

^fMeshik et al., 2012.