Abstract:
A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
Abstract:
A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
Abstract:
A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
Abstract:
A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
Abstract:
A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
Abstract:
A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
Abstract:
A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
Abstract:
PURPOSE: A method for manufacturing a micro electronic column tungsten CFE(Cold Field Emitter) is provided to improve the durability by stably emitting electrons. CONSTITUTION: A regular length of a tungsten wire is inserted into a KOH solution. An electrochemical etch is operated. An Nd:YAG laser(200) is projected to one end of the tungsten wire. A tungsten wire(310) is rotated about the central axis. The tungsten wire is moved in parallel with the central axis(C).
Abstract:
본발명은펄스전자빔을방출하는 RF 전자총과선형가속기시스템및 이를이용한펄스전자빔생성방법으로서, 전자총에의한펄스전자빔생성방법에있어서, 소정시간에공진기의음극에서방출된전자가상기공진기의양극에도달하는데, 상기공진기의내부에인가되는 AC 전기장의주기의정수배의시간만큼걸리도록하는크기를갖는 DC 전기장을상기공진기의음극과양극사이에인가하는단계; 및상기소정시간에방출된전자보다늦게방출된전자의속도가상기소정시간에방출된전자의속도보다빠르도록하고, 상기소정시간에방출된전자보다일찍방출된전자의속도가상기소정시간에방출된전자의속도보다늦도록하는크기를갖는상기 AC 전기장을상기공진기내부로인가하는단계를포함하는것을특징으로하는펄스전자빔생성방법과이를구현시킬수 있는 RF 전자총및 상기 RF 전자총을이용하는선형가속기시스템이며, 이와같은본 발명에의하면음극과양극사이의거리, DC 전기장의세기, AC 전기장의세기와주파수를적절히조절하여높은주파수에서도펄스전자빔이만들어지면서또한음극과양극사이갭을통과하여자유공간을진행하는전자빔이스스로뭉치도록하는 RF 전자총을제공할수 있으며, 상기 RF 전자총을이용하여보다간단한구조의선형가속기시스템을구현할수 있다.