Browsing Institute's contributions by Author "Ushikubo, T."
Now showing items 1-2 of 2
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Ion microprobe analyses of oxygen three-isotope ratios of chondrules from the Sayh al Uhaymir 290 CH chondrite using a multiple-hole disk
Nakashima, D.; Ushikubo, T.; Gowda, R.N.; Kita, N.T.; Valley, J.W.; Naga, K. (Wiley-Blackwell, 2011)The ion microprobe is the only technique capable of determining high-precision stable isotope ratios in individual tiny extraterrestrial particles (less than or equal to 100 mu m in diameter), but these small samples present ... -
Oxygen isotope systematics of chondrules in the Allende CV3 chondrite: High precision ion microprobe studies
Rudraswami, N.G.; Ushikubo, T.; Nakashima, D.; Kita, N.T. (Elsevier, 2011)The oxygen three-isotope systematics of 36 chondrules from the Allende CV3 chondrite are reported using high precision secondary ion mass spectrometer (CAMECA IMS-1280). Twenty-six chondrules have shown internally homogenous ...