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Nitrogen-Doped Chemical Vapour Deposited Diamond： a New Material for Room-Temperature Solid State Maser

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Chinese Physics Letters 2007年第7期24卷 2088-2090页

作者： N. A. Poklonski N. M. Lapchuk A. V. khomich 吕反修唐伟忠 V. G. Ralchenko I. I. Wlasov M. V. Chukichev Sambuu Munkhtsetseg Department of Physics Belarusian State University Minsk 220030 Belarus V. A. Kotelnikov Institute of Radio Engineering and Electronics Russia Academy of Sciences Fryazino 141191 Russia School of Material Science and Engineering University of Science and Technology Beijing Beijing 100083 A. M. Prokhorov General Physics Institute Russia Academy of Sciences Moscow 119991 Russia Department of Physics M. V. Lomonosov Moscow State University Moscow 119899 Russia National University of Mongolia Ulaanbaatar 210646 Mongolia

Electron spin resonance （ESR） in polycrystalline diamond films grown by dc arc-jet and microwave plasma chemical vapour deposition is studied. The films with nitrogen impurity concentration up to 8 × 10^18 cm^-3 are also characterized by Raman, cathodoluminescence and optical absorption spectra. The ESR signal from P1 centre with g-factor of 2.0024 （nitrogen impurity atom occupying C site in diamond lattice） is found to exhibit an inversion with increasing the microwave power in an H102 resonator. The spin inversion effect could be of interest for further consideration of N-doped diamonds as a medium for masers operated at room temperature.

关键词： ELECTRON-SPIN RESONANCE SYNTHETIC DIAMOND SINGLE-CRYSTAL EPR SIGNAL FILMS CATHODOLUMINESCENCE DEFECTS CVD MORPHOLOGY ENERGY

Gold-Platinoid Mineralization of Metasomatically Altered Ultramafites in Precambrian Protrusions of Mamynsky Geoblok

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Global Geology 2003年第2期8卷 160-165页

作者： V.G.khomich V.P.Molchanov N.G.Boriskina Geological Institute of the Far Eastern Branch Russian Academy of Sciences Vladivostok 690022 RussiaGeological Institute of the Far Eastern Branch Russian Academy of Sciences Vladivostok 690022 RussiaGeological Institute of the Far Eastern Branch Russian Academy of Sciences Vladivostok 690022 Russia

On the contiguous territories of Russia and China, along the left and right banks of the Amur River (Heilongjiang Province of China, and Amur Oblast’ of Russia), several Precambrian protrusions (Gonzhinsk, Mamynsk, Amurkhe, and Khumakhe) are known. On the Russian territory, along the setting and on the area of the protrusions, lode manifestations, precious-metal deposits, and gold-platinoid placers are known having the industrial importance. Ultramafites are metasomatically altered more likely by the action of the Late Paleozoic intrusions and produced by them hydrothermae, and are transformed into listvenites. It can be concluded that as one of the sources of precious metals in the placers were the aureoles of listvenitization. This is evidenced by the presence of talc (typomorphic mineral of apoultrabasites) inclusions together with Pt-, Pd- and Ir-bearing gold in the corrosive coatings of the primary platinoids. This conclusion requires the revision of the work strategy of prospecting the lode gold and PGE manifestations within the ore-placer node because apoultrabasites before were considered non-promising for precious metals.

关键词： ultramafites, gold-platinoid, mineralization, Precambrian, AmurRiver

俄罗斯远东岗仁地体金铜矿床地质、地球化学特征及其LA-ICP-MS锆石U-Pb年龄

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地质通报 2015年第4期34卷 618-629页

作者：张国宾杨言辰 khomich V G 叶松青李海洋王林郝明王庆双吉林大学地球科学学院吉林长春130061 俄罗斯科学院远东分院远东地质所俄罗斯海参威690022

岗仁地体位于额尔古纳超地体北部边缘,蒙古—鄂霍茨克构造带南部,该区分布着大量的大型、超大型金矿床,这些矿床在成因上与中酸性侵入岩和浅成次火山岩关系密切。岩石地球化学研究表明,花岗闪长岩-闪长岩组合明显富集大离子亲石元素、... 详细信息

岗仁地体位于额尔古纳超地体北部边缘,蒙古—鄂霍茨克构造带南部,该区分布着大量的大型、超大型金矿床,这些矿床在成因上与中酸性侵入岩和浅成次火山岩关系密切。岩石地球化学研究表明,花岗闪长岩-闪长岩组合明显富集大离子亲石元素、不相容元素和轻稀土元素,亏损高场强元素和重稀土元素。球粒陨石标准化稀土配分模式为轻稀土元素富集、重稀土元素亏损的右倾型,具有微弱的负Eu异常或基本无Eu异常,无Ce异常,元素地球化学性质反映出花岗闪长岩-闪长岩组岩浆具有壳幔混合的特征,且形成于大陆边缘的火山弧环境。LA-ICP-MS锆石U-Pb测年结果揭示,皮奥涅尔金银矿床含矿闪长玢岩的206Pb/238U年龄加权平均值为113.8±2.0Ma,博尔古利坎铜金钼矿床赋矿二长闪长斑岩的206Pb/238U年龄加权平均值为112.7±2.8Ma,与皮奥涅尔金银矿床和博尔古利坎铜金钼矿床成矿有关的奥列佳花岗闪长岩体的年龄分别为117.2±1.3Ma和117.0±3.6Ma。由此可知,皮奥涅尔金银矿床和博尔古利坎铜金钼矿床形成于燕山早期,与中国黑龙江地区三道湾子金矿、东安金矿等金矿床形成时代一致。

关键词：地质特征地球化学特征 LA-ICP-MS锆石U-Pb年龄岗仁俄罗斯

Amur Gold-Bearing Belt: Geotectonic Position and Perspectives for Revealing New Deposits of Precious Metals

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Global Geology 1999年第2期4卷 179-186页

作者： khomich V.G. and Utkin V.P. (Far East Geological Institute of FEB RAS Vladivostok, 690022, Russia )

The ore-bearing belts, specialized for precious metals, are substantia ted to exist in the south Far East of Russia. The longest of which is the Amursk y gold-bearing belt extended from the Amur River mouth to the Ussuri River lowe r course and further to the southwest on China territory, probably, to the Sungar i River head. The fact that we have distinguished the Amursky and other gold-be a ring belts, make it possible to reevaluate the perspectives of the South Far Eas t of Russia and North-East China for new deposits of precious metals.

关键词： gold-bearing belt geotectonic position perspective Am ur

Heavy metals accumulation in urban soils of Belarus: Testing, mapping and ecological risk assessment

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Chinese Journal Of Geochemistry 2006年第B8期25卷 57-57页

作者： Sergey V. Kakareka Valery S. khomich Tamara I. Kukharchyk Institute for Problems of Natural Resources Use & Ecology Minsk Belarus