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BF分子第一激发三重态的势能函数与光谱常数
  • ISSN号：1672-3600
  • 期刊名称：《商丘师范学院学报》
  • 时间：0
  • 分类：O561.1[理学—原子与分子物理;理学—物理]
  • 作者机构：[1]信阳师范学院物理电子工程学院,河南信阳464000
  • 相关基金：国家自然科学基金资助项目（10574039）; 河南省教育厅自然科学研究项目（2011B140020）
作者： 熊保库[1], 王林[1], 施德恒[1]
关键词： 原子与分子物理, 分子结构与势能函数, BF, 激发态, MURRELL-SORBIE函数, atomic and molecular physics, molecular structure and potential function, BF, excited state, Murrell - Sorbic function
中文摘要：

利用原子分子反应静力学原理,推导出了BF分子第一激发三重态的合理离解极限;使用QCISD和QCISD（T）方法,在6-311G（3df,3pd）、6-311＋＋G（3df,3pd）和cc-PVQZ基组下,对BF分子第一激发三重态的平衡结构、谐振频率和离解能进行了优化计算,应用QCISD（T）/6-311G（3df,3pd）对BF分子第一激发三重态进行了单点能扫描,并将扫描结果用最小二乘法拟合Murrell-Sorbie势能函数.由拟合得到的势能函数,计算了与第一激发三重态（A3∏）相应的光谱常数（Be、αe、ωe和ωeχe）,计算结果与实验符合得很好.

英文摘要：

the possible electronic states and their reasonable dissociation limits of the first excited state for BF are determined based on the atomic and molecular reaction statics. The equilibrium geometry, the harmonic frequency and the dissociation energy about the first excited state（ A3∏ ）have been accurately calculated using the methods as QCISD and QCISD （T） at the basis sets of 6 - 311 G （3df,3pd）, 6 - 311 ＋ ＋ G （ 3 df, 3pd ） and cc - PVQZ. After scanning the whole potential curve for the first excited state by using QCISD （T）/6 -311 G（ 3df,3pd）, then have a least square fitted to Murrell - Sorbic function. At last , the spectroscopy constants （ Be, αe,we, and wexe ） are cal- culated according to the M -S function, which are in good agreement with the experimental data.

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期刊信息
  • 《商丘师范学院学报》
  • 主管单位:河南省教育厅
  • 主办单位:商丘师范学院
  • 主编：司林胜
  • 地址：河南省商丘市平原路55号
  • 邮编：476000
  • 邮箱：sqsysr@126.com sqsyzr@126.com
  • 电话：0370-3126863
  • 国际标准刊号：ISSN：1672-3600
  • 国内统一刊号：ISSN：41-1303/Z
  • 邮发代号:
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  • 被引量:5467