ACTIVATION OF AIR NEAR A TARGET BOMBARDED BY 3-GEV PROTONS

被引：6

作者：

AWSCHALO.M

LARSEN, FL

SCHIMMER.W

机构：

[1] National Accelerator Laboratory, Batavia, IL

[2] Princeton-Pennsylvania Accelerator, Princeton University, Princeton, NJ

来源：

NUCLEAR INSTRUMENTS & METHODS | 1969年 / 75卷 / 01期

关键词：

D O I：

10.1016/0029-554X(69)90656-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Measurements of 14O, 15O, 13N, 11C created in air around internal and external accelerator targets are reported for an incident proton energy of 3 GeV and Fe, Pt and Pb targets. For incident proton currents of 1011 p/sec, average radionuclide concentrations of 5.4 × 10-9μCi/cm3 of 13N and 8.0×10-9μCi/cm3 are found in a typical experimental cave. Also,a precision measurement of the 11C-half life is reported as T 1 2(11C=20.40±0.0 min. © 1969.

引用

页码：93 / &

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