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北京HI-13串列加速器的能量刻度
ENERGY CALIBRATION OF BEIJING HI-13 TANDEM ACCELERATOR
【摘要】 利用 ̄(27)Al(p,n) ̄(27)Si中子阈反应的阈能E_(th)=5.7969MeV, ̄(12)C(p,a_O) ̄9B共振反应的共振能量E_γ=14.23075MeV以及对 ̄(14)N(p,p_O) ̄(14)N、 ̄(14)N(p,d_O) ̄(13)N反应用动量匹配法,在交叉能量为E_c=17.1647MeV等3个能量点对北京HL-13串列加速器作了刻度。得到加速器分析磁铁常数K(keV·u/MHz ̄2)=43.6210+1.293×10 ̄(-5)E_b(keV),是能量的弱函数,在质子能量为E_p=14.23075MeV时,加速器的能量分辨是(ΔE/E)_r=1.8×10 ̄(-4),其能量稳定度为(ΔE/E),=3.2×10 ̄(-4)。
【Abstract】 Beijing HI-13 Tandem accelerator was calibrated at three energy points:the neutron thresh-old reaction ̄(27)Al(p,n) ̄(27)Si,Eth=5.7969 MeV,the resonace reaction ̄(12)C(p,aO) ̄9B,Eγ= 14.23075MeV,P=1.2 keV and Ec=17.1646 MeV which determined by the momentum matchingmethod,i.e.utilizing a reaction pair which have same magnetic rigidities at a certain beam ener-gy Ec.The pair of ̄(14)N(p,pO) ̄(14)N and ̄(14)N(p,dO) ̄(13)N with the cross energy Ec=17.1646 MeV wasused.The analyzing magnet constant K(keV·u/MHz ̄2)=43.621 +1.293 ×10 ̄(-5)Eb(keV),be-ing a weak dependence of the beam energy Eb.The energy resolution measured for the resonacereaction ̄(12)C(p,aO) ̄9 B with Eγ=14.23075 MeV is ΔE/E=1.8 ×10 ̄(-4) and the energy stability isΔE/E=3.2×10 ̄(-4)。
- 【文献出处】 原子能科学技术 ,ATOMIC ENERGY SCIENCE AND TECHNOLOGY , 编辑部邮箱 ,1994年01期
- 【分类号】TL520.6
- 【被引频次】1
- 【下载频次】28