Mapping the deformation in the 'island of inversion': Inelastic scattering of Ne-30 and Mg-36 at intermediate energies

Doornenbal P.; Scheit H.; Takeuchi S.; Aoi N.; Li K.; Matsushita M.; Steppenbeck D.; Wang H.; Baba H.; Ideguchi E.; Kobayashi N.; Kondo Y.; Lee J.; Michimasa S.; Motobayashi T.; Poves A.; Sakurai H.; Takechi M.; Togano Y.; Yoneda K.

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Mapping the deformation in the 'island of inversion': Inelastic scattering of Ne-30 and Mg-36 at intermediate energies

机译：在中间能量下映射“反转岛”中的变形：内部30和MG-36的非弹性散射

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The transition strengths of the first-excited 2(+) states and deformation lengths of the nuclei Ne-30 and Mg-36 were determined via Coulomb-and nuclear-force-dominated inelastic scattering at intermediate energies. Beams of these exotic nuclei were produced at the RIKEN Radioactive Isotope Beam Factory and were incident on lead and carbon targets at energies above 200 MeV/u. Absolute excitation cross sections on the lead target yielded reduced transition probabilities of 0.0277(79) and 0.0528(121) e(2) b(2), while the measurements with the carbon target revealed nuclear deformation lengths of delta(N) = 1.98(11) and 1.93(11) fm for Ne-30 and Mg-36, respectively. Corresponding quadrupole deformation parameters of beta(2) similar to 0.5 from the two probes were found comparable in magnitude, showing no indication for a reduction in deformation along isotopic and isotonic chains from Mg-32 towards the neutron drip-line. Comparisons to shell-model calculations illustrate the importance of neutron excitations across the N = 20 shell for Ne-30 and suggest that shallow maximums of collectivity may occur around N = 22 and 24 along the neon and magnesium isotopic chains, respectively.

机译：通过中间能量的库仑和核力统治的非弹性散射测定第一激发2（+）状态和核NE-30和MG-36的变形长度的转变强度。这些异种核的梁在Riken放射性同位素梁厂生产，并在200meV / U以上的能量上入射在铅和碳靶标上。铅靶上的绝对励磁横截面产生0.0277（79）和0.0528（121）e（2）B（2）的过渡概率降低，而碳靶的测量揭示了Delta（n）= 1.98的核变形长度（ 11）和NE-30和MG-36的1.93（11）FM分别。发现与来自两种探针类似的β（2）的相应四极磁性变形参数，其幅度相当，显示不显示沿同位素和等渗链的变形的指示，并从Mg-32朝向中子滴注线。对壳模型计算的比较说明了NE-30中N = 20壳体上的中子激发的重要性，并表明分别沿着氖和镁同位素链的N = 22和24周围发生浅的最大元度。

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来源
《Physical review, C》 |2016年第4期|共7页
作者
Doornenbal P.; Scheit H.; Takeuchi S.; Aoi N.; Li K.; Matsushita M.; Steppenbeck D.; Wang H.; Baba H.; Ideguchi E.; Kobayashi N.; Kondo Y.; Lee J.; Michimasa S.; Motobayashi T.; Poves A.; Sakurai H.; Takechi M.; Togano Y.; Yoneda K.;
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RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

Univ Tokyo Ctr Nucl Study RIKEN Campus Wako Saitama 3510198 Japan;

Tokyo Inst Technol Dept Phys Meguro Ku Tokyo 1528551 Japan;

Tokyo Inst Technol Dept Phys Meguro Ku Tokyo 1528551 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

Univ Tokyo Ctr Nucl Study RIKEN Campus Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

Univ Autonoma Madrid Dept Fis Teor E-28049 Madrid Spain;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

RIKEN Nishina Ctr Wako Saitama 3510198 Japan;

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正文语种 eng
中图分类原子核物理学、高能物理学;
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专利

1. Mapping the deformation in the "island of inversion": Inelastic scattering of Ne-30 and Mg-36 at intermediate energies [J] . Doornenbal P., Scheit H., Takeuchi S., Physical review, C . 2016,第4期

机译：在中间能量下映射“反转岛”中的变形：内部30和MG-36的非弹性散射
2. The first excited state of Ne-30 studied by proton inelastic scattering in reversed kinematics [J] . Yanagisawa Y, Notani M, Sakurai H, Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions . 2004,第0期

机译：反向运动学中质子非弹性散射研究Ne-30的第一激发态
3. The first excited state of Ne-30 studied by proton inelastic scattering in reversed kinematics [J] . Yanagisawa Y., Notani M., Sakurai H., Physics Letters, B. Nuclear Physics and High Energy Physics . 2003,第1a2期

机译：反向运动学中质子非弹性散射研究Ne-30的第一激发态
4. Fully microscopic description of elastic and inelastic scattering at intermediate incident energies [C] . Kosho Minomo, Michio Kohno, Masakazu Toyokawa, International Workshop on Compound-Nuclear Reactions and Related Topics . 2016

机译：中间事故能量的弹性和无弹性散射的完全显微镜描述
5. Probing single-particle structure near the island of inversion by direct neutron knockout from intermediate-energy beams of neon-26,28 and magnesium-30,32 [D] . Terry, James Russell 2006

机译：通过直接中子从氖26,28和镁30,32的中间能束中敲除来探测反转岛附近的单粒子结构
6. IRIXS: a resonant inelastic X-ray scattering instrument dedicated to X-rays in the intermediate energy range [O] . Hlynur Gretarsson, Didem Ketenoglu, Manuel Harder, -1

机译：IRIXS：一种共振非弹性X射线散射仪专门用于中等能量范围内的X射线
7. Mapping the deformation in the “island of inversion”: Inelastic scattering of ³⁰Ne and ³⁶Mg at intermediate energies [O] . Lee, HCJ, Michimasa, S, Motobayashi, T, 2016

机译：映射“倒置岛”中的变形： ^{30 Ne和 ^{36 的非弹性散射中等能量的镁}}

8. Nuclear Structure and Intermediate Energy Hadron Probes: Excitation of High Energy Multipole Resonances by Inelastic Scattering of 340 MeV and 480 MeV alpha -Particle [R] . Faraggi, H. 1983

机译：核结构和中能强子探测器：通过340 meV和480 meV alpha-particle的非弹性散射激发高能多极共振

Mapping the deformation in the 'island of inversion': Inelastic scattering of Ne-30 and Mg-36 at intermediate energies

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