Spectroscopy of He-7 using the Be-9(He-6, Be-8) transfer reaction

Renzi F.; Raabe R.; Randisi G.; Smirnov D.; Angulo C.; Cabrera J.; Casarejos E.; Keutgen Th.; Ninane A.; Charvet J. L.; Gillibert A.; Lapoux V.; Nalpas L.; Obertelli A.; Skaza F.; Sida J. L.; Orr N. A.; Sidorchuk S. I.; Wolski R.; Borge M. J. G.; Escrig D.

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Spectroscopy of He-7 using the Be-9(He-6, Be-8) transfer reaction

机译：使用BE-9（HE-6，BE-8）转移反应的HE-7光谱学

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The unbound nucleus He-7 has been investigated via the reaction of a 16.8 MeV He-6 radioactive ion beam on a Be-9 target. The measurement of the outgoing 8Be through its well characterized two-alpha decay permitted the energy of the He-6 +n system to be reconstructed. Through comparison with a complete Monte Carlo simulation incorporating R-matrix lineshapes, the He-7 ground state was determined to lie 0.380(28) MeV above the neutron decay with a width of Gamma = 0.179(21) MeV. A neutron spectroscopic factor SF = 0.608(18) was extracted in agreement with the most recent calculations. Significant evidence was found for a broad resonance lying at 2.6(2) MeV above threshold with a Gamma(FWHM) = 2.3(3) MeV. These parameters are fully consistent with the properties of 1/2(-) state reported by Wuosmaa et al. [Phys. Rev. C 72, 061301(R) (2005)]. Limits were also put on the presence of narrow resonances seen in earlier experiments.

机译：通过在BE-9靶标的16.8MeV He-6放射性离子束的反应来研究未结核He-7。通过其特征在于其特征的两个α衰减的输出8BE的测量允许重建HE-6 + N系统的能量。通过与完整的蒙特卡罗模拟的比较结合R型矩阵线，确定HE-7接地状态在中子衰减之上的0.380（28）emV，宽度为γ= 0.179（21）MeV。与最近的计算一致地提取中子光谱因子SF = 0.608（18）。发现了以γ（FWHM）= 2.3（3）MEV的阈值高2.6（2）MEV的宽谐振的显着证据。这些参数完全一致地与Wuosma等人报告的1/2（ - ）状态的特性一致。 [物理。 Rev. C 72,061301（R）（2005）]。还限制了在早期实验中看到的狭窄共振存在。

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《Physical review, C》 |2016年第2期|共11页
作者
Renzi F.; Raabe R.; Randisi G.; Smirnov D.; Angulo C.; Cabrera J.; Casarejos E.; Keutgen Th.; Ninane A.; Charvet J. L.; Gillibert A.; Lapoux V.; Nalpas L.; Obertelli A.; Skaza F.; Sida J. L.; Orr N. A.; Sidorchuk S. I.; Wolski R.; Borge M. J. G.; Escrig D.;
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Katholieke Univ Leuven Dept Phys &

Astron Inst Kern Stralingsfys Celestijnenlaan 200D B-3001 Leuven Belgium;

Katholieke Univ Leuven Dept Phys &

Astron Inst Kern Stralingsfys Celestijnenlaan 200D B-3001 Leuven Belgium;

Katholieke Univ Leuven Dept Phys &

Astron Inst Kern Stralingsfys Celestijnenlaan 200D B-3001 Leuven Belgium;

Katholieke Univ Leuven Dept Phys &

Astron Inst Kern Stralingsfys Celestijnenlaan 200D B-3001 Leuven Belgium;

Catholic Univ Louvain Ctr Rech Cyclotron B-1348 Louvain La Neuve Belgium;

Catholic Univ Louvain Ctr Rech Cyclotron B-1348 Louvain La Neuve Belgium;

Catholic Univ Louvain Ctr Rech Cyclotron B-1348 Louvain La Neuve Belgium;

Catholic Univ Louvain Ctr Rech Cyclotron B-1348 Louvain La Neuve Belgium;

Catholic Univ Louvain Ctr Rech Cyclotron B-1348 Louvain La Neuve Belgium;

CEA Saclay DRF IRFU SPhN F-91191 Gif Sur Yvette France;

CEA Saclay DRF IRFU SPhN F-91191 Gif Sur Yvette France;

CEA Saclay DRF IRFU SPhN F-91191 Gif Sur Yvette France;

CEA Saclay DRF IRFU SPhN F-91191 Gif Sur Yvette France;

CEA Saclay DRF IRFU SPhN F-91191 Gif Sur Yvette France;

CEA Saclay DRF IRFU SPhN F-91191 Gif Sur Yvette France;

CEA Saclay DRF IRFU SPhN F-91191 Gif Sur Yvette France;

Normandie Univ ENSICAEN CNRS IN2P3 LPC Caen F-14050 Caen France;

JINR Flerov Lab Nucl React RU-141980 Dubna Russia;

JINR Flerov Lab Nucl React RU-141980 Dubna Russia;

CSIC Inst Estruct Mat Plaza Murillo 2 E-28040 Madrid Spain;

CSIC Inst Estruct Mat Plaza Murillo 2 E-28040 Madrid Spain;

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中图分类原子核物理学、高能物理学;
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专利

1. Spectroscopy of He-7 using the Be-9(He-6, Be-8) transfer reaction [J] . Renzi F., Raabe R., Randisi G., Physical review, C . 2016,第2期

机译：使用BE-9（HE-6，BE-8）转移反应的HE-7光谱学
2. Single-proton pickup reaction of the halo nucleus He-6 on a Be-9 target at 25 MeVucleon [J] . Pang DY, Ye YL, Jiang DX, Chinese physics letters . 2007,第10期

机译：卤原子He-6对Be-9靶标的25 MeV /核子的单质子拾取反应
3. Formation of highly excited states of He-6 in the Be-9(pi(-), tt)t reaction [J] . Gurov YB, Karpukhin VS, Lapushkin SV, JETP Letters . 2006,第1期

机译：Be-9（pi（-），tt）t反应中He-6高激发态的形成
4. INFRARED ION SPECTROSCOPY OF METAL-LIGAND REDOX PAIRS GENERATED VIA ELECTRON TRANSFER REDUCTION REACTIONS [C] . Musleh Munshi, Jonathan Martens, Giel Berden, International Mass Spectrometry Conference . 2018

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5. FORMATION AND REACTIONS OF INTERNAL ENERGY SELECTED PHOTOIONS: I. RESONANT AUTOIONIZATION STUDIED BY THRESHOLD PHOTOELECTRON SPECTROSCOPY. II. CROSS-SECTIONS FOR THE CHARGE AND PROTON TRANSFER REACTIONS OF INTERNAL ENERGY SELECTED IONS. [D] . MURRAY, PAUL TERRENCE. 1979

机译：内部能量选择光子的形成和反应：I.阈值光电子能谱研究的共振自电离。二。内部能量选择离子的电荷和质子转移反应的横截面。
6. Femtosecond spectroscopy of electron transfer in the reaction center of the photosynthetic bacterium Rhodopseudomonas sphaeroides R-26: Direct electron transfer from the dimeric bacteriochlorophyll primary donor to the bacteriopheophytin acceptor with a time constant of 2.8 ± 0.2 psec [O] . J.-L. Martin, J. Breton, A. J. Hoff, 1986

机译：飞秒光谱法研究光合细菌球形红假单胞菌R-26在反应中心的电子转移：电子从二聚体细菌叶绿素主要供体直接转移至细菌脱氧叶绿素受体时间常数为2.8±0.2 psec
7. Spectroscopy of He-7 using the Be-9(He-6, Be-8) transfer reaction [O] . Renzi Francesca, Raabe Riccardo, Randisi G, 2016

机译：利用Be-9（He-6，Be-8）转移反应对He-7进行光谱分析
8. Study of the Reactions Be-9/P,alpha/ Li-6, Be-9/P,D/ Be-8 from 300 Ke V to 900 Ke V [R] . Bertrand, F., Grenier, G., Pornet, J. 1968

机译：从300 Ke V到900 Ke V的反应Be-9 / p，α/ Li-6，Be-9 / p，D / Be-8的研究

Spectroscopy of He-7 using the Be-9(He-6, Be-8) transfer reaction

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