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CN-122002679-A - Stable type atomic furnace with high collimation and low power consumption

CN122002679ACN 122002679 ACN122002679 ACN 122002679ACN-122002679-A

Abstract

The invention relates to the field of cold atom physical precision experiments, in particular to a stable type atomic furnace with high collimation and low power consumption, which comprises a heat shield, wherein a transmitting pipe is arranged at the bottom of the heat shield, one end of the transmitting pipe positioned in a cavity is connected with a collimator through a connecting piece II, a heating wire II is wound on the outer side of the collimator, the upper end of the collimator is connected with an atom container, a heating layer is sleeved on the outer sides of the atom container, the collimator and the connecting piece II together, a heating wire I is wound on the outer wall of the heating layer, three shielding layers are sequentially arranged in the cavity between the heating layer and the heat shield from inside to outside.

Inventors

  • ZENG CHAOYU
  • HUANG BIN
  • LI DONGHAO
  • SHEN HENG
  • XU ZHONGXIAO
  • YANG XIURU

Assignees

  • 山西大学

Dates

Publication Date
20260508
Application Date
20260402

Claims (9)

  1. 1. A stable type atomic furnace with high collimation and low power consumption is characterized by comprising a heat shielding cover (144), wherein a part of emitting tube (180) extending into the cavity of the heat shielding cover (144) is installed at the bottom of the heat shielding cover (144), one end of the emitting tube (180) positioned in the cavity is connected with a collimator (171) through a connecting piece II (133), a heating wire II (172) is wound on the outer side of the collimator (171), an atomic container (160) is connected with the upper end of the collimator (171), the top of the atomic container (160) is connected with the top of the shielding cover (144) through a connecting piece I (132), a heating layer (151) is sleeved on the outer sides of the atomic container (160), the collimator (171) and the connecting piece II (133), a first heat shielding layer (141), a second heat shielding layer (143) and a third heat shielding layer (143) are sequentially arranged in the cavity between the heating layer (151) and the heat shielding cover (144) from inside to outside, the first heat shielding layer (142) and the third heat shielding layer (141) are welded on the outer side of the top of the first heat shielding layer (142), the bottom of the heat shield cover (144) is welded on the outer wall of the transmitting tube (180), thermocouples are distributed on the heating wire I (152) and the heating wire II (172), and a thermocouple electrode (110) for supplying power to the thermocouples and a heating wire binding post (120) for supplying power to the heating wire I (152) and the heating wire II (172) are arranged on the top of the heat shield cover (144).
  2. 2. The stable atomic furnace with high collimation and low power consumption according to claim 1, wherein a flange I (191), a connecting channel (131) and a flange II (192) are arranged on the top of the heat shielding cover (144) from top to bottom, the connecting channel (131) is welded between a lower flange of the flange I (191) and an upper flange of the flange II (192), the heat shielding cover (144) is welded on the bottom of the flange II (192), the connecting piece I (132) is connected to the center of the lower flange of the flange II (192), the thermocouple electrode (110) is mounted on the flange I (191) and connected with a thermocouple through the flange I (191) and the connecting channel (131), and the heating wire binding post (120) is mounted on the flange II (192).
  3. 3. The stable atomic furnace with high collimation and low power consumption according to claim 1, wherein the collimator (171) comprises a collimator tube (1711) and a capillary collimator tube (1712), the capillary collimator tube (1712) is a microtube array composed of 900 capillary collimator tubes, the array is square in shape and is located at the central axis of the collimator tube (1711).
  4. 4. A high collimation, low power consumption stable atomic furnace as claimed in claim 1, wherein the capillary collimator (1712) has a high aspect ratio of 50.
  5. 5. The stable atomic furnace with high collimation and low power consumption according to claim 1, wherein the atomic container (160) is in a long cylindrical shape as a whole, and the emitting tube (180) is in a cylindrical shape.
  6. 6. The stable atomic furnace with high collimation and low power consumption according to claim 1, wherein the heating wire I (152) is spirally wound on the heating layer (151), and the heating wire II (172) is spirally wound on the collimator (171).
  7. 7. The high collimation, low power consumption stable atomic furnace of claim 1, wherein heating wire I (152) and heating wire II (172) heat the collimator (171) 30 ℃ above the atomic container (160).
  8. 8. The high collimation, low power consumption, stable atomic furnace as recited in claim 1, wherein the material of the first heat shield (141), the second heat shield (142) and the third heat shield (143) is ceramic fiber, and the material of the heat shield (144) is ceramic material.
  9. 9. The stable atomic furnace with high collimation and low power consumption according to claim 1, wherein the first heat shielding layer (141), the second heat shielding layer (142), the third heat shielding layer (143) and the heat shielding cover (144) are subjected to high polishing treatment.

Description

Stable type atomic furnace with high collimation and low power consumption Technical Field The invention relates to the field of cold atom physical precision experiments, in particular to a stable type atomic furnace with high collimation and low power consumption. Background In experiments related to cold atom physics, an atomic furnace is a device for heating solid metal to form an atomic beam, and provides an initial atomic source for subsequent researches such as laser cooling, magneto-optical trap trapping, glass-einstein condensation and the like. The nuclear function of the atomic furnace is to heat and evaporate solid metal to form directional atomic beam so as to perform ultra-low temperature quantum precision experiments. The method comprises the steps of carrying out a laser cooling and magneto-optical trap capture operation on an atomic beam emitted by an atomic furnace, wherein the laser cooling and magneto-optical trap capture operation is carried out on the atomic beam, the atomic beam emitted by the atomic furnace has a certain divergence angle and speed distribution, the laser cooling and magneto-optical trap capture operation is influenced, the collimation of the atomic furnace is critical to the follow-up experiment, the average speed of the atomic beam is larger, the atomic beam possibly exceeds the effective capture range of the magneto-optical trap, atomic collision is increased at high temperature, the beam divergence angle is possibly increased, the collimation is reduced, the heating wire is broken due to the fact that the heating wire is excessively high in a long time, the service life of the atomic furnace is influenced, and in addition, the power consumption is unstable, such as power noise, heating current fluctuation and the like, the temperature of a furnace body is changed, atomic vapor pressure is influenced, the atomic beam density is uneven, and the stability of the atomic furnace influences on the follow-up experiment. Therefore, it is necessary to design an atomic furnace device capable of improving the collimation and stability to the greatest extent and reducing the power consumption operation so as to reduce the influence on the subsequent experiments as much as possible. Disclosure of Invention The invention overcomes the defects of the prior art and provides a stable atomic furnace with high collimation and low power consumption. The technical scheme includes that the stable type atomic furnace comprises a heat shield, a part of emitting pipes extending into a cavity of the heat shield are arranged at the bottom of the heat shield, one ends of the emitting pipes located in the cavity are connected with a collimator through a connecting piece II, heating wires II are wound on the outer sides of the collimator, an atomic container is connected to the upper end of the collimator, the top of the atomic container is connected with the top of the heat shield through a connecting piece I, heating layers are sleeved on the outer sides of the atomic container, the collimator and the connecting piece II together, heating wires I are wound on the outer walls of the heating layers, a first heat shield layer, a second heat shield layer and a third heat shield layer are sequentially arranged in the cavity between the heating layers and the heat shield from inside to outside, the tops of the first heat shield layer, the second heat shield layer and the third heat shield layer are all welded on the outer sides of the connecting piece I, the bottoms of the emitting pipes are all welded on the outer walls of the emitting pipes, thermocouples are distributed on the heating wires I and the heating wires II, heating wires I and the tops of the heat shield are provided with heating wires I and thermocouple wires for supplying power to the heating wires and the thermocouple. The heat shield is characterized in that a flange I, a connecting channel and a flange II are arranged on the top of the heat shield from top to bottom, the connecting channel is welded between a lower flange of the flange I and an upper flange of the flange II, the heat shield is welded on the bottom of the flange II, the connecting piece I is connected to the center of the lower flange of the flange II, the thermocouple electrode is arranged on the flange I and connected with a thermocouple through the flange I and the connecting channel, and the heating wire binding post is arranged on the flange II. As a further limitation of the technical scheme of the invention, the collimator comprises a collimator tube and capillary collimator tubes, wherein the capillary collimator tubes are microtube arrays consisting of 900 capillary collimator tubes, the array shapes are square, and the capillary collimator tubes are positioned at the central axis of the collimator tube. As a further limitation of the solution of the present invention, the capillary collimator has a high aspect ratio of 50. As a further limitation of the