UFs undergoes decomposition m the presence of SF6 when mixtures of both are madiated wrth a TEA CO2 laser. The mechanism for UFe decomposition may involve vrbrational energy transfer from excited SF, and laser absorption from the same laser pulse by excited UFe in its vibrational quasi-continuum \*
SF6-sensitized dissociation of UF6 with a pulsed CO2 laser
โ Scribed by Chin Chi-tsung; Hou Hui-qi; Bao Yi-han; Li Ting-hua
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 395 KB
- Volume
- 101
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The dissociation of UFe sensitized by SFe excited with a pulsed CO* laser in the presence of Iis and Co as scavc~ge~s has been investigated. in the SF~--UF~-HZ system the dissociation yieIds have been determined as a function of the laser frezyncy, the fluence. and Hs partial pressure. A masimum dissociation yield has been found at a laser frequency of 935 cm _ No obvious dissociation of UFs \as observed in the UF6-SF6 system without F-atom scavengers.
๐ SIMILAR VOLUMES
The fractional ditsociatlon, 32 r, of 32SFc by the output of J pulsed TEA CO2 laser has been found to depend upon Q. the tota intcgratcd laser intensity. as 32~q 0: mm for both th.: P(20) and P( 16) laser lines. where fn = 3 m the range 2 < Q < 7.2 J/cm2 and incrcxcs from 3 to \* 4 as cl1 IS reduced
It has recently been suggested [ll that when l,l,l-trichloroethane is irradiated with a continuous-wave COP laser in the presence of SF6 sensitizer, the decomposition occurs in a molecular manner, viz. CH3CC13 4 CHZ = CCl2 + HC1 rather than by a radical-chain mechanism CHBCC13 CH3 -CC12 + C1 C1 + CH