论文标题
在$δ$ resonance Energy区域中质子核散射中不一致的Bremsstrahlung的增强
Enhancement of incoherent bremsstrahlung in proton-nucleus scattering in the $Δ$-resonance energy region
论文作者
论文摘要
我们研究了Bremsstrahlung光子在质子散射$δ$ resonance Energy区域的散射中的发射。包括$δ$ - 元素在核 - 靶标与Bremsstrahlung模型中的属性，我们找到以下内容。 （1）不一致的排放和一致排放之间的比率约为$ 10^{6} $ - $ 10^{7} $，$ p + \ isotope [197] {au} $（没有$Δ$ - 差额），以质子beam $ e _ {\ rm p}的良好性，良好的brems grount coldients of Proton beam $ e _ { 数据。这证实了在研究此反应中$δ$共和性研究中的重要性，这些反应尚未研究。我们估计了相干性和不相互的贡献，电和磁性贡献，全面的bremsstrahlung光谱，用于在\ isotope [12] {C}，\ isotope [40] {Ca}，\ isotope [208] {pb} nuciention {pb} nucienty at $ e _ {pb} nuctions上散射质子的最多= 800 $ rm rm p} = MES， Bremsstrahlung发射。 （2）the nucleus-target中的过渡$ p \，n \至δ^{+} n $在该反应中加强了bremsstrahlung光子在$ e _ {\ rm p} = 800 $ 〜MEV中的发射。对于更多的光核，包括$δ$谐音的正常核和核的光谱之间的差异更大，但是对于较重的核，光谱较大。 （3）考虑到不久的$δ$ resonance的状态，我们发现在Nucleus-Target中具有$δ$ resonance的频谱在高能光子区域中基本上比没有此$Δ$ resonance的光谱比频谱更大\ isotope [208] [δ] {pb}与\ isotope [12] {C}，\ isotope [40] {Ca}，\ isotope [208] {pb}相比，提供了）。建议在可能的将来的实验中对$δ$ res子的注册进行此类方面。
We investigate emission of the bremsstrahlung photons in the scattering of protons off nuclei at the $Δ$-resonance energy region. Including properties of $Δ$-resonance in the nucleus-target to the bremsstrahlung model, we find the following. (1) Ratio between incoherent emission and coherent emission is about $10^{6}$--$10^{7}$ for $p + \isotope[197]{Au}$ (without $Δ$-resonance) at energy of proton beam $E_{\rm p}$ of 190~MeV, where the calculated full bremsstrahlung spectrum is in good agreement with experimental data. This confirms importance of incoherent processes in study of $Δ$-resonances in this reaction, which have never been studied yet. We estimate coherent and incoherent contributions, electric and magnetic contributions, full bremsstrahlung spectra for the scattering of protons on the \isotope[12]{C}, \isotope[40]{Ca}, \isotope[208]{Pb} nuclei at $E_{\rm p}=800$~MeV, we find conditions for the most intensive bremsstrahlung emission. (2) Transition $p\,N \to Δ^{+} N$ in the nucleus-target reinforces emission of bremsstrahlung photons in that reaction at $E_{\rm p}=800$~MeV. Difference between the spectra for normal nuclei and nuclei with included $Δ$-resonance is larger for more light nuclei, but the spectra are larger for heavier nuclei. (3) Taking into account shortly lived state of $Δ$-resonance, we find that the spectrum with $Δ$-resonance in the nucleus-target is essentially larger in the high energy photon region than the spectrum without this $Δ$-resonance (corresponding calculations for \isotope[12][Δ]{C}, \isotope[40][Δ]{Ca}, \isotope[208][Δ]{Pb} in comparison with \isotope[12]{C}, \isotope[40]{Ca}, \isotope[208]{Pb} are provided). Such an aspect is recommended for registration of $Δ$-resonances in nuclei in possible future experiments.
