公开(公告)号：US4258427A

公开(公告)日：1981-03-24

申请号：US30988

申请日：1979-04-18

申请人： John A. Favre ,  Thomas W. Schmidt

发明人： John A. Favre ,  Thomas W. Schmidt

IPC分类号： H01J49/04 ,  H01J39/34

CPC分类号： H01J49/0031

摘要： The difference in concentration of a selected isotope in two materials is measured by directing gaseous beams of the materials towards the inlet of a mass spectrometer. A shutter alternately blocks transmission of the two beams. Means is also provided for blocking either of the two beams for any period of time desired. Provision is made for automatically passing either one of the gaseous beams or both of the gaseous beams through the shutter to the mass spectrometer. The output signal from the mass spectrometer is passed to a synchronous detector as is a reference signal which is representative of the speed of operation of the shutter. The output signal from the synchronous detector is representative of the concentration of the selected isotope in a first material if only the gaseous beam of the first material is being passed through the shutter to the mass spectrometer. The output signal from the synchronous detector is representative of the concentration of the selected isotope in the second material if only the gaseous beam of the second material is being passed through the shutter to the mass spectrometer. The output signal from the synchronous detector is representative of the difference in concentration of a selected isotope in the two materials if both of the gaseous beams are being passed through the shutter alternately to the mass spectrometer. If desired, these outputs may be utilized to calculate the isotope ratio difference (.delta.) for the selected isotope in the two materials.

摘要翻译： 通过将材料的气体束引向质谱仪的入口来测量两种材料中所选择的同位素的浓度差异。 快门交替地阻止两个光束的传输。 还提供了用于在任何期望的时间段中阻挡两个光束中的任一个的装置。 提供了自动将气体束中的任一种或两种气体束通过快门传送到质谱仪。 来自质谱仪的输出信号被传递到同步检测器，参考信号代表快门的操作速度。 来自同步检测器的输出信号代表第一材料中所选择的同位素的浓度，如果只有第一材料的气体束通过快门到质谱仪。 来自同步检测器的输出信号代表了第二种材料中所选择的同位素浓度，只有第二种材料的气态光束通过快门才能进入质谱仪。 来自同步检测器的输出信号表示如果两个气体束均通过快门交替地传送到质谱仪，则两种材料中所选同位素的浓度差异。 如果需要，这些输出可用于计算两种材料中所选择的同位素的同位素比差（delta）。

公开(公告)号：US4263507A

公开(公告)日：1981-04-21

申请号：US7738

申请日：1979-01-30

申请人： Thomas W. Schmidt

发明人： Thomas W. Schmidt

IPC分类号： B01D59/44 ,  H01J3/14

CPC分类号： B01D59/44 ,  H01J49/0031

摘要： Two converging molecular beams are introduced alternately into the inlet of a mass spectrometer by utilizing a chopping wheel apparatus to alternately pass the two molecular beams to the inlet of the mass spectrometer.

公开(公告)号：US5044837A

公开(公告)日：1991-09-03

申请号：US407316

申请日：1989-09-14

申请人： Thomas W. Schmidt

发明人： Thomas W. Schmidt

IPC分类号： B65G53/46

CPC分类号： B65G53/4633

摘要： A method and apparatus for continuously feeding particulate solid material into a pressurized system without pressure loss. The invention includes a rotary feeder for transferring particulate material to a high pressure system. In the feeder, chambers are filled with particulate material, and a rotor turns to empty the particulate material into the high pressure system. A compression cylinder is provided which has an inlet in communication with a high pressure chamber substantially empty of particulate material. The gas emptied from this chamber is forced by a piston in the compression cylinder into another chamber which is intially filled with particulate material at substantially atmospheric pressure. As the chamber which has been emptied of gas is brought into communication with the inlet of the feeder, any gas loss is substantially negligible because the gas is at approximately the same pressure as the inlet. The actuation of the piston and the inlet and outlet valves are controlled in response to the rotation of the rotor within the feeder.

摘要翻译： 一种用于将颗粒状固体材料连续进料到加压系统中而没有压力损失的方法和装置。 本发明包括用于将颗粒材料转移到高压系统的旋转进料器。 在进料器中，室中填充有颗粒材料，转子转动将颗粒物料排空到高压系统中。 提供了一种压缩气缸，其具有与基本上不含颗粒材料的高压室连通的入口。 从该室排出的气体被压缩气缸中的活塞压迫到另外的室中，该室在基本上大气压力下充满了颗粒物质。 当已经排空气体的腔室与进料器的入口连通时，由于气体与入口处于大致相同的压力，因此任何气体损失基本可忽略。 响应于进料器内的转子的旋转，控制活塞和入口和出口阀的致动。

公开(公告)号：US4068122A

公开(公告)日：1978-01-10

申请号：US713001

申请日：1976-08-09

申请人： Thomas W. Schmidt ,  Charles F. Cook

发明人： Thomas W. Schmidt ,  Charles F. Cook

IPC分类号： H01J49/02 ,  H01J49/04 ,  H01J39/34

CPC分类号： H01J49/0027

摘要： The difference in concentration of a selected isotope in two materials is measured by directing beams of the materials toward the inlet of a mass spectrometer. A shutter is positioned in each beam to pass the two beams at predetermined different frequencies. The output signal from the mass spectrometer is applied to two synchronous detectors, each of which receives a reference signal representative of the frequency at which a respective beam is passed to the mass spectrometer. The output signals from the two detectors are compared.

摘要翻译： 通过将材料的光束引向质谱仪的入口来测量两种材料中选择的同位素的浓度差。 快门位于每个光束中，以预定的不同频率通过两个光束。 来自质谱仪的输出信号被应用于两个同步检测器，每个同步检测器接收表示相应波束通过质谱仪的频率的参考信号。 比较来自两个检测器的输出信号。

公开(公告)号：US4214158A

公开(公告)日：1980-07-22

申请号：US7737

申请日：1979-01-30

申请人： Thomas W. Schmidt

发明人： Thomas W. Schmidt

IPC分类号： G21K1/04 ,  H01J49/04 ,  H01J49/42

CPC分类号： H01J49/0431 ,  G21K1/043 ,  H01J49/0027

摘要： Infinite dilution activity coefficients (.gamma..infin.) are determined for a binary liquid system utilizing dual molecular beams. The vapors from two liquid systems, at least one of which is a binary liquid system, are collimated into molecular beams. The molecular beams are alternately chopped before being detected by mass spectrometer. The output from the mass spectrometer is representative of the difference in partial pressure for any component in the two liquid systems. The output from the mass spectrometer can be utilized to calculate .gamma..infin. for the binary liquid system.

摘要翻译： 对于使用双分子束的二元液体系统确定无限稀释活度系数（γINFINITY）。 来自两个液体系统的蒸汽，其中至少一个是二元液体系统，被准直成分子束。 分子束在被质谱仪检测到之前交替切碎。 质谱仪的输出代表了两种液体系统中任何组分的分压差异。 可以使用质谱仪的输出来计算二元液体系统的伽马度。

公开(公告)号：US4207465A

公开(公告)日：1980-06-10

申请号：US921684

申请日：1978-07-03

申请人： John A. Favre ,  Thomas W. Schmidt

发明人： John A. Favre ,  Thomas W. Schmidt

IPC分类号： H01J49/04 ,  B01D59/44 ,  H01J39/34

CPC分类号： H01J49/0495 ,  H01J49/0027

摘要： The difference in the concentration of a selected isotope in a first material and a second material, which may be a reference material, is measured by means of a mass spectrometer. The analysis is carried out with only a small amount of sample by introducing only a small slug of sample of the first material into the mass spectrometer by means of a sample valve. If there is a sufficient quantity of the second material, the first material my be compared directly to the second material. Direct comparison is also used when the second material is a reference material. If there is also only a small supply of the second material then the first material is compared to a reference material and in like manner the sample valve is utilized to supply a small sample of the second material to the mass spectrometer to be compared to the reference material. An indirect comparison of the first and second materials is thus provided.

摘要翻译： 可以通过质谱仪测量第一材料和第二材料（可以是参考材料）中所选同位素的浓度差。 通过仅通过样品阀将仅第一种材料的小块样品引入质谱仪，仅用少量样品进行分析。 如果有足够数量的第二种材料，我将第一种材料直接与第二种材料进行比较。 当第二材料是参考材料时也使用直接比较。 如果还只有少量的第二材料供应，那么将第一种材料与参考材料进行比较，并且以类似的方式，采样阀用于将第二种材料的小样品供应给质谱仪，以与参考物质进行比较 材料。 因此提供了第一和第二材料的间接比较。