湘潭大学自然科学学报
湘潭大學自然科學學報
상담대학자연과학학보
NATURAL SCIENCE JOURNAL OF XIANGTAN UNIVERSITY
2000年
4期
126-130
,共5页
蔡孟秋%唐碧玉%杨国伟%杨益民
蔡孟鞦%唐碧玉%楊國偉%楊益民
채맹추%당벽옥%양국위%양익민
经典轨线%PES势能面%转动激发%统计分布
經典軌線%PES勢能麵%轉動激髮%統計分佈
경전궤선%PES세능면%전동격발%통계분포
Quasiclassical trajectory (QCT) method%Potential energy surface%Rotational excitation%Statistical distribution
依据LEPS,运用经典轨线来研究吸能反应Sr+HF(v=1,J=1~3)→SrF+H,△Ho=(27.652±6.688)kJ/mo1.对于HF(J=1~3)的每个转动能级,计算结果表明,SrF产物的振动能级分布是统计分布;并且,当增加HF的转动内部状态时,SrF的振动布居在v=0最大,然后随着v的增加很快单调下降.计算结果与实验结果相符,并讨论了此反应的势能面.
依據LEPS,運用經典軌線來研究吸能反應Sr+HF(v=1,J=1~3)→SrF+H,△Ho=(27.652±6.688)kJ/mo1.對于HF(J=1~3)的每箇轉動能級,計算結果錶明,SrF產物的振動能級分佈是統計分佈;併且,噹增加HF的轉動內部狀態時,SrF的振動佈居在v=0最大,然後隨著v的增加很快單調下降.計算結果與實驗結果相符,併討論瞭此反應的勢能麵.
의거LEPS,운용경전궤선래연구흡능반응Sr+HF(v=1,J=1~3)→SrF+H,△Ho=(27.652±6.688)kJ/mo1.대우HF(J=1~3)적매개전동능급,계산결과표명,SrF산물적진동능급분포시통계분포;병차,당증가HF적전동내부상태시,SrF적진동포거재v=0최대,연후수착v적증가흔쾌단조하강.계산결과여실험결과상부,병토론료차반응적세능면.
Quasiclassical trajectory method (QCT) based on London - Polanyi - Sato (LEPS) potential energy surface has been used to investigate the effect of reagent rotational excitation on the endothermic reaction Sr + HF( v = 1, J = 1 - 3)→SrF + H, Ho = ( 26.752 + 6. 688) k J/mol. Internal state distributions of the product have been calculated. The results showed that for each initial HF rotational level ( J = 1 - 3), a nearly statistical distribution of product vibrational energy is obtained and the vibrational distribution peak at v= 0, decreasing monotonically thereafter, while increasing the initial rotational state of HF increases the population of the higher vibrational states of SrF product. The calculated results are in good agreement with experimental results. Implications of the results are discussed with regard to the potential energy surface to the reaction.