Improvement of the 36Cl-AMS system at MALT using a Monte Carlo ion-trajectory simulation in a gas-filled magnet

被引：8

作者：

Aze, Takahiro ^{[1
]}

Matsuzaki, Hiroyuki

Matsumura, Hiroshi

Nagai, Hisao

Fujimura, Masatsugu

Noguchi, Mayumi

Hongo, Yayoi

Yokoyama, Yusuke

机构：

[1] Univ Tokyo, Dept Earth & Planetary Sci, Bunkyo Ku, Tokyo, Japan

[2] Univ Tokyo, Dept Nucl Engn & Management, Bunkyo Ku, Tokyo, Japan

[3] High Energy Accelerator Res Organizat, Radiat Sci Ctr, Tsukuba, Ibaraki 3050801, Japan

[4] Nihon Univ, Coll Humanities & Sci, Tokyo 1568550, Japan

[5] Nihon Univ, Grad Sch Integrated Basic Sci, Tokyo 1568550, Japan

[6] Univ Tokyo, Ocean Res Inst, Tokyo 1648639, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 259卷 / 01期

基金：

日本学术振兴会;

关键词：

accelerator mass spectrometry; Cl-36; gas-filled magnet;

D O I：

10.1016/j.nimb.2007.01.154

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We developed and experimentally confirmed a Monte Carlo simulation code to describe the trajectories of Cl-36 and S-36 ions in a gas-filled magnet (GFM) at the MALT, the University of Tokyo. The simulation revealed that the central trajectories of the ions in the GFM are almost spiral and most of the 36S ions collided with the interior wall of the GFM. Based on this property of the trajectories, we have found a more advantageous condition for suppressing 36S. As a result, the background level of the Cl-36/Cl ratio was lowered to 10(-15) (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：144 / 148

页数：5

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