ISOTOPE ENRICHMENT DURING DIAMOND GROWTH

被引：10

作者：

BANHOLZER, WF ^{[1
]}

ANTHONY, TR ^{[1
]}

机构：

[1] GE, CTR CORP R&D, SCHENECTADY, NY 12301 USA

来源：

关键词：

D O I：

10.1016/0925-9635(92)90089-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Isotopic segregation of C-12 and C-13 was investigated for both high-pressure and low-pressure diamond synthesis processes. Single-crystal diamond produced by the high-pressure temperature-gradient process was significantly enriched in C-12 relative to the liquid-nutrient composition. In contrast, for polycrystalline diamond produced by the low-pressure chemical vapor deposition process no isotopic fractionation within our experimental error was observed.

引用

页码：1157 / 1160

页数：4

共 22 条

[1] THERMAL-DIFFUSIVITY OF ISOTOPICALLY ENRICHED C-12 DIAMOND [J].

ANTHONY, TR ;

BANHOLZER, WF ;

FLEISCHER, JF ;

WEI, LH ;

KUO, PK ;

THOMAS, RL ;

PRYOR, RW .

PHYSICAL REVIEW B, 1990, 42 (02) :1104-1111

[2]

BANHOLZER WF, 1992, THIN FILM SOLIDS, V111, P222

[3] THE NATURE AND ORIGIN OF INTERSTELLAR DIAMOND [J].

BLAKE, DF ;

FREUND, F ;

KRISHNAN, KFM ;

ECHER, CJ ;

SHIPP, R ;

BUNCH, TE ;

TIELENS, AG ;

LIPARI, RJ ;

HETHERINGTON, CJD ;

CHANG, S .

NATURE, 1988, 332 (6165) :611-613

[4] MULTIPLE GROWTH EVENTS DURING DIAMOND GENESIS - AN INTEGRATED STUDY OF CARBON AND NITROGEN ISOTOPES AND NITROGEN AGGREGATION STATE IN COATED STONES [J].

BOYD, SR ;

MATTEY, DP ;

PILLINGER, CT ;

MILLEDGE, HJ ;

MENDELSSOHN, M ;

SEAL, M .

EARTH AND PLANETARY SCIENCE LETTERS, 1987, 86 (2-4) :341-353

[5]

BUNN C, 1964, CRYSTALS THEIR ROLE, P112

[6] FORMATION OF DIAMOND .1. DEMONSTRATION OF ATOMIC PROCESSES INVOLVING CARBON [J].

CANNON, P .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1962, 84 (22) :4253-&

[7]

CHALMERS B, 1962, PHYSICAL METALLURGY

[8]

CHU CJ, 1990, 2ND P INT C NEW DIAM, P307

[9]

DERJAGUIN BV, 1985, DIAMOND WROUGHT MAN, P97

[10]

Galimov E.M., 1985, GEOCHEM INT, V22, P118

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