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Browsing by Author "Nagao K."

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HETEROGENEOUS DISTRIBUTION OF SOLAR AND COSMOGENIC NOBLE GASES IN CM CHONDRITES AND IMPLICATIONS FOR THE FORMATION OF CM PARENT BODIES

Nakamura T.; Nagao K.; Metzler K.; Takaoka N. (1999)

Distribution of solar, cosmogenic, and primordial noble gases in thin slices of Murchison, Murray, and Nogoya CM carbonaceous chondrites was determined by the laser microprobe analysis so as to put some constraints on the ...
MICRODISTRIBUTION OF PRIMORDIAL NOBLE GASES IN CM CHONDRITES DETERMINED BY IN SITU LASER MICROPROBE ANALYSIS: DECIPHERMENT OF NEBULAR PROCESSES - NOBLE GASES, CARBON AND AN ESCA STUDY

Nakamura T.; Nagao K.; Takaoka N. (1999)

In situ noble gas analyses using a laser microprobe with a beam diameter of 50-100 μm were performed on thin slices of Murchison and Yamato (Y-) 791198 CM carbonaceous chondrites in order to see microdistribution of ...
NOBLE GASES IN UREILITES RELEASED BY CRUSHING

Okazaki R.; Nakamura T.; Takaoka N.; Nagao K. (2003)

Noble gases in two ureilites, Kenna and Allan Hills (ALH) 78019, were measured with two extraction methods: mechanical crushing in a vacuum and heating. Large amounts of noble gases were released by crushing, up to 26.5% ...
NOBLE GASES, 81KR-KR EXPOSURE AGES AND 244PU-XE AGES OF SIX EUCRITES, BEREBA, BINDA, CAMEL DONGA, JUVINAS, MILLBILLILLIE, AND STANNERN - AN ANOMALOUS, HIGH-MGO/FEO, YET REE-RICH EUCRITE

Miura Y.N.; Nagao K.; Sugiura N.; Fujitani T.; Warren P.H. (1998)

Noble gases including radioactive 81Kr (t1/2 = 2.1 × 105 yr) have been measured for the cumulate eucrite Binda and five noncumulate eucrites, Béréba, Camel Donga, Juvinas, Millbillillie, and Stannern, some of which have ...

Browsing by Author "Nagao K."

Browsing by Author "Nagao K."

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