| 3孔预准直后铬原子束横向位置分布仿真 |
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| 引用本文： | 张宝武,马艳,张萍萍.3孔预准直后铬原子束横向位置分布仿真[J].激光技术,2012,36(3):398-401. |
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| 作者姓名： | 张宝武 马艳 张萍萍 |
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| 作者单位： | 1.中国计量学院 计量测试工程学院 杭州 310018; |
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| 基金项目： | 清华大学精密测试技术及仪器国家重点实验室开放基金资助项目(DL-003)；上海市特殊人工微结构材料与技术重点实验室开放基金资助项目(ammt2011A-3);浙江省科技厅科技计划资助项目(2011R10094) |
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| 摘 要： | 为了研究52Cr原子以外其它同位素对铬原子束横向位置分布的影响,采用蒙特卡罗方法对3孔预准直狭缝条件下的1维激光冷却进行了理论分析。由分析可知,在区分52Cr原子和其它同位素条件下,原子束横向位置分布的基底会有所增加,每一部分原子束的特征值也有明显的变化,中心部分原子束中心最大值有9.5%的降低,半峰全宽有2.9%的增加;两侧每一部分原子束的中心最大值有25%的增加,半峰全宽略有增宽。结果表明,其它同位素的区分与否对中心部分原子束的中心最大值和半峰全宽影响很小。
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| 关 键 词： | 激光技术 激光冷却 蒙特卡罗方法 铬原子束 |
| 收稿时间： | 2011/8/23 |
Simulation of transverse position distributions of Cr atomic beam pre-collimated by three apertures |
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| ZHANG Bao-wu
,
MA Yan
,
ZHANG Ping-ping.Simulation of transverse position distributions of Cr atomic beam pre-collimated by three apertures[J].Laser Technology,2012,36(3):398-401. |
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| Authors: | ZHANG Bao-wu MA Yan ZHANG Ping-ping |
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| Affiliation: | 1.College of Metrology & Measurement Engineering,China Jiliang University,Hangzhou 310018,China;2.State Key Laboratory of Precision Measurement Technology and Instruments,Tsinghua University,Beijing 100084,China;3.Tongji University,Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology,Shanghai 200092,China) |
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| Abstract: | In order to study the effect of isotopes except for 52Cr on the transverse position distribution of Cr atomic beam, simulation was carried out for 1-D transverse laser cooling with a three-aperture pre-collimating slit by means of Monte Carlo method. The results show that isotopes except for 52Cr can make the background increased and affect characteristics of each part of the atomic beam: the central maximum value decreases 9.5% and its full width at half maximum(FWHM)increases 2.9% in the center; while the maximum value increases 25% with little increase of the FWHM in either side. It concludes that the existence of the isotopes except for 52Cr has little effect on the center maximum value and FWHM of the center part atomic beam. |
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| Keywords: | laser technique laser cooling Monte Carlo method Cr atomic beam |
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