Lutetium-Yttrium Oxyorthosilicate（LYSO）

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Since 1999SincesinceSince 1999 Since : 1999 We are committed to the supply of all types of substrate wafers to the microelectronics industry Lutetium-yttrium oxyorthosilicate（LYSO） Brief : Lutetium-yttrium oxyorthosilicate, also known as LYSO, is an inorganic chemical compound with main use as a scintillator crystal. Its chemical formula is Lu2(1-x)Y2xSiO5. It is commonly used to build electromagnetic calorimeters in particle physics. LYSO crystals have the advantages of high light output and density, quick decay time, excellent energy resolution. Application: The biggest application fields are the major used in life science is PET (positron emission computed tomography (ct) imaging device), including clinical medicine, drugs and pharmacokinetics, biological experiments, such as health care Physical Property List: Density(g/cm3) 7.4 Effective Atomic Number 66 Radiation length(cm) 1.1 Decay Constant (ns) 40-44 Peak Emission (nm) 428 Light Yield (Relative BGO=100%) 190 Index of Refraction 1.82 Peak excitation (nm) 375 Radiation Hardness (rad) >106 Melting Point (°C) 2050 Hardness (Mohs) 5.8 Our ability: The LYSO crystal scintillation performance of our company has reached the international advanced level, which can meet the requirements of medical imaging PET performance and has the ability of bulk supply. Our company has a complete set of crystal processing and assembly line, and can process all kinds of crystal and display assembly according to customer's requirements. The crystal size has reached dia80mm *200mm length which can also be made to typical round wafers: 1”/2”/3” etc with SSP(single side polished)&DSP(double sides polished). HANGZHOU FREQCONTROL ELECTRONIC TECHNOLOGY LTD. Head office : # 1106, Crystal International Business Center(CIBC), No.198 Wuxing Rd ,Qianjiang new city Hangzhou, P.R.China Post code: 310006 TEL: 0086-571-85803723 85803731 85803732 FAX: 0086-571-85803724 E-mail: [email protected] [email protected] .

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10 NYCRR Part 16 Appendix a on Exemptions
APPENDIX 16-A TABLE 1 EXEMPTIONS Table 1-A. Radioactive Materials Item (a) Exempt concentrations. (1) Except as provided in paragraph (2) of this item, any person is exempt from the requirements of this Part to the extent that such person transfers, receives, possesses or uses products or materials containing radioactive material in concentrations not in excess of those listed in Table 2 of this Appendix. (2) No person may introduce radioactive material into a product or material knowing or having reason to believe that it will be transferred to persons exempt under paragraph (1) of this item or equivalent regulations of the United States Nuclear Regulatory Commission or any agreement State, except in accordance with specific license issued by the department or a similar license issued by the State Department of Labor, the New York City Department of Health, the United States Nuclear Regulatory Commission, any agreement State or the general license provided in item (h) of Table 6 of this Appendix. Item (b) Exempt quantities.1 (1) Except as provided in paragraphs (2) and (3) of this item, any person is exempt from the requirements of this Part to the extent that such person transfers, receives, possesses or uses radioactive material in individual quantities each of which does not exceed the applicable quantity set forth in Table 3 of this Appendix. (2) Any person who possesses radioactive material received prior to July 1, 1973, under the exemption formerly provided in section 16.101 of this Part is exempt from the requirements of this Part to the extent that such person transfers, receives, possesses or uses such radioactive material.
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