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Small neutron source adopting windowless gas target

A neutron source and gas target technology, which is applied in nuclear technology and application fields, can solve the problems of insufficient neutron current intensity and the target cannot withstand strong beam current, and achieve the effect of low cost, small volume and high beam intensity

Inactive Publication Date: 2010-12-15
PEKING UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of small-scale high-current neutron source to solve the problem that the target of the existing neutron source cannot bear the strong beam current and the neutron current generated is not strong enough

Method used

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  • Small neutron source adopting windowless gas target
  • Small neutron source adopting windowless gas target
  • Small neutron source adopting windowless gas target

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Embodiment Construction

[0013] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.

[0014] The neutron source of the windowless gas target is mainly divided into the following parts:

[0015] 1. ECR ion source

[0016] 2. Low energy beam transmission line.

[0017] 3. Windowless gas target

[0018] The deuterium ion beam is generated from the ECR ion source, sent to the windowless gas target through the low-energy beam transmission line, and reacts with the target to generate neutrons.

[0019] The deuterium ion ECR ion source is a device that generates deuterium ions. It uses microwave feed power to ionize the deuterium gas in the discharge chamber of the ion source to generate plasma. An extraction electrode system is installed at the end of the discharge chamber to extract the deuterium ions in the plasma. The deuterium ion ECR ion source developed by the Heavy Ion Institute of Peking University can be used, and th...

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Abstract

The invention discloses a small neutron source adopting a windowless gas target, which belongs to the field of nuclear technology and application. In the invention, an ECR (Electron Cyclotron Resonance) ion source is used for generating a deuterium ion and directly extracted by a high-voltage extraction electrode for bombarding a windowless gas target sealed by a plasma; because the windowless deuterium gas target is sealed by adopting the plasma, the windowless deuterium gas target is allowed to bear high-flow-strength beam current; and because the energy loss of the deuterium ion when penetrating through a plasma window is less, the neutron yield is higher. Compared with a neutron pipe, the neutron source provided by the invention has high allowed beam current strength and high neutron yield. Compared with an accelerator neutron source with large size, complex system and high cost, the neutron source provided by the invention has small size, simple system and low cost. Compared with a neutron source for directly carrying out deuterium-tritium reaction on an ion source to generate neutron, the ion source has simple system, low cost and no tritium radioactive processing and circulating problem. The invention has very wide application prospect.

Description

technical field [0001] The invention belongs to the field of nuclear technology and application, and in particular relates to a small neutron source. Background technique [0002] There are mainly two kinds of small neutron sources, one is radioactive source neutron source, and the other is small accelerator neutron source. The neutron source of the radioactive source neutron source has low neutron current intensity and limited service life, and it produces a direct current neutron beam. The accelerator neutron source can produce higher neutron flux intensity, can produce direct current or pulsed neutron beams, no neutrons are produced during non-working hours, and there is less radioactive pollution. The existing accelerator neutron sources include neutron tubes, and neutron tubes (Research progress and application of neutron tubes, Qiao Yahua, Nuclear Electronics and Detection Technology. 2008 No. 6) use deuterium ions generated by ion sources to pass through the accelera...

Claims

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Application Information

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IPC IPC(8): G21G4/02
Inventor 朱昆黄胜陆元荣邹宇斌郭之虞彭士香
Owner PEKING UNIV
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