摘要：通过试验研究了工作气体的压力和种类对涂硼电离室坪特性、中子灵敏度和γ感应度等性能的影响。试验结果表明,随着工作气体压力的增大,电离室坪区会向高电压方向移动,即电离室的工作电压会增大;工作气体为10%CH4+90%Ar(P10)时,当工作气体压力(从0.025 MPa增加到0.15 MPa)增大,电离室中子灵敏度会迅速增大,继续增大工作气体压力,电离室中子灵敏度保持不变;电离室中子灵敏度会随着工作气体中高电离能气体成分增加而减小;P10气体压力在0.1~0.4 MPa范围内,电离室γ感应度与工作气体压力成正比。

摘要：真空溅射镀膜机镀件的色差是衡量一件镀件质量好坏的重要的指标,也是评估一台设备质量的重要技术指标。影响镀件色差有多种因素,工作气体是其中一个重要因素。从真空溅射机的工作原理、工作气体对膜层的影响及试验研究入手,从气体压力和气体分布均匀性两个方面探讨了真空溅射机镀膜过程中工作气体对镀件色差的影响。为镀件色差分析、真空溅射镀膜机工作气体进气管的设计和镀件质量的提高提供了新的思路和参考。

摘要：A small prototype of an active-target time projection chamber detector based on the gas electron multiplier(GEM) readout technique was designed and *** calculations were performed to analyze the electric field distribution and optimize the *** particular,a guard ring installed above the GEM foil may play an important role in shaping the electric field in the gas vessel and improving the overall performance of the *** best results were obtained at a guard-ring voltage of-950 *** using a collimated a-particle source,an energy resolution of 3.6–4.0 ke V can be achieved for deposited energies of 18–21 keV,respectively.A position resolution of less 0.2 mm was observed along the electron drift direction,whereas the resolution in the readout plane was approximately 0.45 mm.A time resolution of less than 20 ns was *** using helium as the primary working gas as well as the target material,a t a elastic scattering events can be clearly imaged.

摘要：TN248.2 2004010132 室温封离型TEM00CO激光器=Sealed-off TEM00(COlasers at room temperator[刊,中]/高贵（天津工业大学理学院.天津（300160））,傅汝廉…∥光电子·激光.—2003,14（5）.—493-495 对于半共焦腔结构的封离型CO激光器,采用自孔径选模方式设计放电管口径,成功地实现了基模运转,在CO、Xe、He 3组分工作气体情况下,输出功率94W。

摘要：脉冲直流PCVD工模具表面强化的技术原理是：在专用的PCVD设备中，在一定的温度、气压条件下通入一定比例的工作气体，利用等离子场的能量，促成化学反应，在工模具表面形成耐热、超硬强化层。研制出的专用PCVD设备采用独特设计的内热式加热系统，真空室内安装发热器件，比外热式显著提高了热效率及加热速率，逆变式脉冲直流电源频率范围大、负脉冲深度可调。