Clustering features of light neutrondeficient nuclei in nuclear

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Clustering features of light neutrondeficient nuclei in nuclear fragmentation Denis Artemenkov, (VBLHEP, JINR) Eu.

Clustering features of light neutrondeficient nuclei in nuclear fragmentation Denis Artemenkov, (VBLHEP, JINR) Eu. NPC 2015 August 31 – September 4, 2015, Groningen, Netherlands 1

BECQUEREL at the JINR Nuclotron is devoted systematic exploration of clustering features of light

BECQUEREL at the JINR Nuclotron is devoted systematic exploration of clustering features of light stable and radioactive nuclei. The fragmentation of a large variety of light nuclei was investigated using the emulsions exposed to few A Ge. V nuclear beams at JINR Nuclotron. A nuclear track emulsion is used to explore the fragmentation of the relativistic nuclei. 2

Role of the Nuclear and Electromagnetic Interactions in the Coherent Dissociation of the Relativistic

Role of the Nuclear and Electromagnetic Interactions in the Coherent Dissociation of the Relativistic 7 Li Nucleus into the 3 H + 4 He Channel N. G. Peresadko, V. N. Fetisov, Yu. A. Aleksandrov, S. G. Gerasimov, V. A. Dronov, V. G. Larionova, E. I. Tamm, S. P. Kharlamov http: //arxiv. org/pdf/1110. 2881. pdf

12 C 3 , 3. 65 A Ge. V (PAVICOM image) 5

12 C 3 , 3. 65 A Ge. V (PAVICOM image) 5

12 C(n, n’)3α, http: //neutrontech. ru En = 14. 1 Me. V DVIN -

12 C(n, n’)3α, http: //neutrontech. ru En = 14. 1 Me. V DVIN - explosives detector on the basis of fast tagged neutron method for complex program for population safety in transport 3α (~3 -5 ) μm 8 Be, 2+ -? 0+

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Opening angle distribution of two α-particles 9 Be 2 9 Be Θ Θ, mrad

Opening angle distribution of two α-particles 9 Be 2 9 Be Θ Θ, mrad <Θ>, mrad σΘ, mrad Fraction (Events) Θn (0 - 10. 5) 4. 4 ± 0. 2 2. 1 ± 0. 2 0. 56 ± 0. 04 (164) Θw (15. 0 – 45. 0) 27. 0 ± 0. 6 5. 9 ± 0. 6 0. 44 ± 0. 04 (130) Fractions of events Θn and Θw demonstrate compliance with weights 0+ and 2+ states of a 8 Be core, adopted in the two-body model, ω0+ = 0. 535 and ω2+ = 0. 465 [1, 2]. They indicate the presence of these states as components of the ground state of the 9 Be nucleus. 1. Y. L. Parfenova and Ch. Leclercq-Willain, «Hyperfine anomaly in Be isotopes and neutron spatial distribution: A three-cluster model for 9 Be» , Phys. Rev. C 72, 054304 ). (2005). 9 2. Y. L. Parfenova and Ch. Leclercq-Willain, «Hyperfine anomaly in Be isotopes in the cluster model and the neutron spatial distribution» , Phys. Rev. C 72, 024312(2005)

10 C→ 2α+2 p (1. 2 A Ge. V) 10 C 10

10 C→ 2α+2 p (1. 2 A Ge. V) 10 C 10

9 C http: //arxiv. org/abs/1104. 2439

9 C http: //arxiv. org/abs/1104. 2439

The exposure of NTE pellicles by relativistic 11 C 1. 2 A Ge. V

The exposure of NTE pellicles by relativistic 11 C 1. 2 A Ge. V nuclei was held at the JINR Nuclotron Dec. 2014. The observed channels of fragmentation 11 C nuclei “White” stars 6 H 3 (2%) With emulsion nuclei fragments 10 (4%) B+H 6 (3%) 7 (3%) He + 4 H 15 (9%) 44 (17%) Li + He + H 5 (3%) 17 (7%) Be + He 18 (10%) 26 (10%) 2 He + 2 H 72 (41%) 140 (53%) 3 He 25 (14%) 19 (7%) Channels

8 Be (a) 9 B (b) The distribution of events of the channel 11

8 Be (a) 9 B (b) The distribution of events of the channel 11 C 2α + 2 p by excitation energy: Q 2α pairs α-particles in the inset - enlarged distribution Q 2α (a); Q 2α + p triples 2α + p, in the inset - enlarged distribution Q 2α + p (b).

Summary The presented observations serve as an illustration of prospects of the Nuclotron and

Summary The presented observations serve as an illustration of prospects of the Nuclotron and NTE for nuclear physics researches. Due to a record space resolution the emulsion technique provides unique entirety in studying of light nuclei, especially, neutron-deficient ones. Providing the 3 D observation of narrow dissociation vertices this classical technique gives novel possibilities of moving toward more and more complicated nuclear systems. The results of an exclusive study of the interactions of relativistic 9 Be, 10, 12 C nuclei lead to the conclusion that the known features of their structure are clearly manifested in very peripheral dissociations. Thank you for your attention! 15

Fusion Light Nuclei Light nuclei have relatively highFusion Light Nuclei Light nuclei have relatively high
Active Galactic Nuclei Active Galactic Nuclei AGN NucleiActive Galactic Nuclei Active Galactic Nuclei AGN Nuclei
NUCLEAR CLUSTERS AND NUCLEAR MOLECULES IN LIGHT NUCLEINUCLEAR CLUSTERS AND NUCLEAR MOLECULES IN LIGHT NUCLEI
ACTIVE GALACTIC NUCLEI Pinpoint nuclei emitting intense lightACTIVE GALACTIC NUCLEI Pinpoint nuclei emitting intense light
Lecture 12 Clustering What is Clustering Clustering isLecture 12 Clustering What is Clustering Clustering is
ENSEMBLE CLUSTERING ENSEMBLE CLUSTERING clustering algorithm 1 partitionENSEMBLE CLUSTERING ENSEMBLE CLUSTERING clustering algorithm 1 partition
FLAT CLUSTERING HIERARCHICAL CLUSTERING What is clustering GroupingFLAT CLUSTERING HIERARCHICAL CLUSTERING What is clustering Grouping
DATA MINING CLUSTERING Clustering 4 Clustering unsupervised classificationDATA MINING CLUSTERING Clustering 4 Clustering unsupervised classification
Clustering Kmeans Clustering 2 means Clustering Curve ShowsClustering Kmeans Clustering 2 means Clustering Curve Shows
Kmeans Clustering Kmeans Clustering What is clustering WhyKmeans Clustering Kmeans Clustering What is clustering Why
C 0 clustering Liang Zheng Clustering Clustering alongC 0 clustering Liang Zheng Clustering Clustering along
Variable Clustering 1 Variable Clustering Variable clustering findsVariable Clustering 1 Variable Clustering Variable clustering finds
CLUSTERING Overview Definition of Clustering Existing clustering methodsCLUSTERING Overview Definition of Clustering Existing clustering methods
Clustering Outline Introduction Kmeans clustering Hierarchical clustering COBWEBClustering Outline Introduction Kmeans clustering Hierarchical clustering COBWEB