SCALING-UP C-13 SEPARATION BY INFRARED MULTIPHOTON DISSOCIATION OF THECHCLF2/BR-2 SYSTEM

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	SCALING-UP C-13 SEPARATION BY INFRARED MULTIPHOTON DISSOCIATION OF THECHCLF2/BR-2 SYSTEM
	CHEN, GC; WU, B; LIU, JL; JING, Y; CHU, MX; XUE, LL; MA, PH
	1995
发表期刊	APPLIED PHYSICS B-LASERS AND OPTICS
ISSN	0946-2171
卷号	60 期号:6 页码:583-588
摘要	C-13 Separation at a laboratory scaled-up level by the C-13-selective InfraRed MultiPhoton Dissociation (IRMPD) of CHClF, in the presence of Br-2 has been investigated in a flow reactor. With a complete scaled-up system including a how reactor, an industrially reliable TEA CO2 laser with longer pulse duration and a product-separation set-up for C-13 separation, it has been attempted to optimize the parameters suitable for large-scale production of the carbon isotope. The optimization of C-13 Separation parameters, such as laser fluence, laser frequency and the partial pressure of CHClF2 and Br-2 was tested under static conditions. By irradiation with longer pulses, a lower optimum pressure for a high C-13-production rate was determined. Furthermore, the separation process was scaled in the flow system to examine the C-13-production rates, C-13 atomic fractions in the CBr2F2 products and C-13 depletions in the CHClF2 reactants at different flow rates and laser repetition frequencies. The data obtained from the flow tests demonstrated a 40 mg/h production rate for CBr2F2 at 65% C-13 by using a 40 W (4 J, 10 Hz) laser beam focused with a lens of 120 cm focal length. If the reliable TEA CO2 laser is operated with 100 W (10 J, 10 Hz) output, the production rate of CBr2F2 for C-13 at 60% of 200 mg/h can be attained. The measurements of the spatial profile of the focused laser beam imply a 2 g/h production rate for the 60% C-13 product for an incident power of 200 W (20 J, 10 Hz). C-13 Separation at a laboratory scaled-up level by the C-13-selective InfraRed MultiPhoton Dissociation (IRMPD) of CHClF, in the presence of Br-2 has been investigated in a flow reactor. With a complete scaled-up system including a how reactor, an industrially reliable TEA CO2 laser with longer pulse duration and a product-separation set-up for C-13 separation, it has been attempted to optimize the parameters suitable for large-scale production of the carbon isotope. The optimization of C-13 Separation parameters, such as laser fluence, laser frequency and the partial pressure of CHClF2 and Br-2 was tested under static conditions. By irradiation with longer pulses, a lower optimum pressure for a high C-13-production rate was determined. Furthermore, the separation process was scaled in the flow system to examine the C-13-production rates, C-13 atomic fractions in the CBr2F2 products and C-13 depletions in the CHClF2 reactants at different flow rates and laser repetition frequencies. The data obtained from the flow tests demonstrated a 40 mg/h production rate for CBr2F2 at 65% C-13 by using a 40 W (4 J, 10 Hz) laser beam focused with a lens of 120 cm focal length. If the reliable TEA CO2 laser is operated with 100 W (10 J, 10 Hz) output, the production rate of CBr2F2 for C-13 at 60% of 200 mg/h can be attained. The measurements of the spatial profile of the focused laser beam imply a 2 g/h production rate for the 60% C-13 product for an incident power of 200 W (20 J, 10 Hz).
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2398
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	CHEN, GC,WU, B,LIU, JL,et al. SCALING-UP C-13 SEPARATION BY INFRARED MULTIPHOTON DISSOCIATION OF THECHCLF2/BR-2 SYSTEM[J]. APPLIED PHYSICS B-LASERS AND OPTICS,1995,60(6):583-588.
APA	CHEN, GC.,WU, B.,LIU, JL.,JING, Y.,CHU, MX.,...&MA, PH.(1995).SCALING-UP C-13 SEPARATION BY INFRARED MULTIPHOTON DISSOCIATION OF THECHCLF2/BR-2 SYSTEM.APPLIED PHYSICS B-LASERS AND OPTICS,60(6),583-588.
MLA	CHEN, GC,et al."SCALING-UP C-13 SEPARATION BY INFRARED MULTIPHOTON DISSOCIATION OF THECHCLF2/BR-2 SYSTEM".APPLIED PHYSICS B-LASERS AND OPTICS 60.6(1995):583-588.