在空间探测应用领域,石墨烯薄膜因其低厚度特性,成为一种受到研究者关注的新材料.针对利用石墨烯薄膜替代碳膜作为星载薄膜式飞行时间(Time of Flight,TOF)系统中透射薄膜材料的应用情景,采用粒子透射仿真软件SRIM和粒子光学仿真软件SIM...在空间探测应用领域,石墨烯薄膜因其低厚度特性,成为一种受到研究者关注的新材料.针对利用石墨烯薄膜替代碳膜作为星载薄膜式飞行时间(Time of Flight,TOF)系统中透射薄膜材料的应用情景,采用粒子透射仿真软件SRIM和粒子光学仿真软件SIMION进行联用的方法,进行石墨烯薄膜和碳膜在TOF系统中具体表现的计算机仿真模拟,得到了飞行时间谱图、散斑分布与散角、探测效率等指标的对比结果.仿真结果表明,应用于星载TOF系统的石墨烯薄膜相比碳膜表现出更好的质谱分辨、更小的散斑半径和散角以及更高的探测效率,表明使用石墨烯薄膜替代碳膜可明显提升薄膜式TOF系统的性能.对该结论的进一步证明则需要对应的实验测试数据和结果.相关结果可为后续对石墨烯薄膜进行实际测试以及其他相关研究提供参考.展开更多
Functionally graded composite/hybrid materials(FGCM/FGHCM)were produced by adding B_(4)C,TiO_(2),and B_(4)C+TiO_(2)ceramic materials at various ratios(0-50%)into the AA6082 matrix.The analysis of the damage caused by^...Functionally graded composite/hybrid materials(FGCM/FGHCM)were produced by adding B_(4)C,TiO_(2),and B_(4)C+TiO_(2)ceramic materials at various ratios(0-50%)into the AA6082 matrix.The analysis of the damage caused by^(60) ions'(1.173-1.1332 MeV)on the material was examined using the SRIM/TRIM Monte Carlo simulation software.In the simulation,the following data regarding the atoms of the target materials were obtained:ion distribution,target ionization,total displacements,surface binding energy,lattice binding energy,and displacement energy.Among the studied four materials,the one with the highest ion range value was found to be AA6082 with 8550A.TiO_(2)was found to be the reinforcement material that reduced the ion range the most in the material.Due to its high binding energy,B_(4)C reinforced AA6082+(0-50%)B_(4)C FGCM was found to have the least vacancy with 4782/ion.展开更多
利用SRIM软件模拟Ar+以不同能量和角度溅射铜靶,根据计算结果得出溅射产额随入射离子能量和角度的变化规律:溅射产额在低能区(0.1-10 ke V)随入射离子能量的增加而增大,在高能区(10-100 ke V)随入射离子能量的增加变化不大且逐渐减小;...利用SRIM软件模拟Ar+以不同能量和角度溅射铜靶,根据计算结果得出溅射产额随入射离子能量和角度的变化规律:溅射产额在低能区(0.1-10 ke V)随入射离子能量的增加而增大,在高能区(10-100 ke V)随入射离子能量的增加变化不大且逐渐减小;溅射产额随着离子入射角的增加逐渐增大,且在60°-80°之间有一极大值,而当入射角再变大时溅射产额急剧下降;入射角在0°-60°范围内,相对溅射产额与入射角余弦值近似成反比。溅射产额的变化规律可利用级联碰撞理论做出合理解释。展开更多
文摘在空间探测应用领域,石墨烯薄膜因其低厚度特性,成为一种受到研究者关注的新材料.针对利用石墨烯薄膜替代碳膜作为星载薄膜式飞行时间(Time of Flight,TOF)系统中透射薄膜材料的应用情景,采用粒子透射仿真软件SRIM和粒子光学仿真软件SIMION进行联用的方法,进行石墨烯薄膜和碳膜在TOF系统中具体表现的计算机仿真模拟,得到了飞行时间谱图、散斑分布与散角、探测效率等指标的对比结果.仿真结果表明,应用于星载TOF系统的石墨烯薄膜相比碳膜表现出更好的质谱分辨、更小的散斑半径和散角以及更高的探测效率,表明使用石墨烯薄膜替代碳膜可明显提升薄膜式TOF系统的性能.对该结论的进一步证明则需要对应的实验测试数据和结果.相关结果可为后续对石墨烯薄膜进行实际测试以及其他相关研究提供参考.
基金the Scientific Research Projects Office of Gazi University,Turkiye(Grant Nos.FGA-2022-7521 and FKA-2023-8617)the financial support of TUBITAK 2211-C and YOK 100/2000 programs。
文摘Functionally graded composite/hybrid materials(FGCM/FGHCM)were produced by adding B_(4)C,TiO_(2),and B_(4)C+TiO_(2)ceramic materials at various ratios(0-50%)into the AA6082 matrix.The analysis of the damage caused by^(60) ions'(1.173-1.1332 MeV)on the material was examined using the SRIM/TRIM Monte Carlo simulation software.In the simulation,the following data regarding the atoms of the target materials were obtained:ion distribution,target ionization,total displacements,surface binding energy,lattice binding energy,and displacement energy.Among the studied four materials,the one with the highest ion range value was found to be AA6082 with 8550A.TiO_(2)was found to be the reinforcement material that reduced the ion range the most in the material.Due to its high binding energy,B_(4)C reinforced AA6082+(0-50%)B_(4)C FGCM was found to have the least vacancy with 4782/ion.
文摘利用SRIM软件模拟Ar+以不同能量和角度溅射铜靶,根据计算结果得出溅射产额随入射离子能量和角度的变化规律:溅射产额在低能区(0.1-10 ke V)随入射离子能量的增加而增大,在高能区(10-100 ke V)随入射离子能量的增加变化不大且逐渐减小;溅射产额随着离子入射角的增加逐渐增大,且在60°-80°之间有一极大值,而当入射角再变大时溅射产额急剧下降;入射角在0°-60°范围内,相对溅射产额与入射角余弦值近似成反比。溅射产额的变化规律可利用级联碰撞理论做出合理解释。
