Preliminary study of a compact pulsed deuterium-deuterium neutron generator with a vacuum arc ion source and a linear induction accelerator

被引：0

作者：

Yang, Z. ^{[1
]}

Cao, X. ^{[1
]}

Zhang, T. H. ^{[1
]}

Zhang, Z. Y. ^{[1
]}

Xing, Y. B. ^{[1
]}

Tang, S. D. ^{[1
]}

Ma, W. ^{[1
,2
]}

Zou, L. P. ^{[1
]}

Lu, L. ^{[1
,2
]}

Long, J. D. ^{[3
]}

机构：

[1] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China

[2] United Lab Frontier Radiotherapy Technol Sun Yat S, Guangzhou 510275, Peoples R China

[3] Fifth Peoples Hosp Suzhou, Suzhou 215028, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2024年 / 1065卷

关键词：

Vacuum arc ion source; High intense pulsed neutron source; Prompt gamma neutron activation analysis; Time-of-flight; Linear induction accelerator; ACTIVATION-ANALYSIS; CONCEPTUAL DESIGN;

D O I：

10.1016/j.nima.2024.169550

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The pulsed neutron beam combined with the time-of-flight (TOF) technique has shown great value in many scientific research and application fields. Most of the neutron -based material identification and interrogation systems require an intense pulsed neutron beam. Time resolved prompt gamma neutron activation analysis (TPGNAA) is an effective analytical method to greatly suppress interference from the other elements or the neutron shields of the detectors. To develop T-PGNAA method in a compact accelerator neutron source, a novel intense pulsed deuterium -deuterium (D -D) neutron generator based on a linear induction accelerator (LIA) was introduced. The generator has four major components: a vacuum arc ion source with deuterated electrode, a diode accelerator structure, a self-biased voltage secondary electron suppressed structure and a deuterated metal target. The present study characterizes the performance of the neutron generator with respect to neutron yield, the ionic current, beam profile, and beam composition as a function of the acceleration voltage at various discharge currents. Monoenergetic neutrons (2.5 MeV) are produced with a yield of -10 4 n/p and a pulse width of -100 ns using about 200 kV of induction acceleration voltage at 10 -4 Pa vacuum environment. In this study, we will discuss various physical and technical issues related to the components of the neutron generator and the operation and merits of the novel neutron generator.

引用

页数：12