Experimental state of n-n correlation function for Borromean halo nuclei investigation

Petrașcu, M.; Constantinescu, A.; Cruceru, I.; Dūma, M.; Giurgiu, M.; Isbasescu, A.; Petrascu, H.; Serban, S.; Stoica, Victor; Bordeanu, C.; Tanihata, I.; Lynch, W. G.; Famiano, M.; Ieki, K.

doi:10.1016/j.nuclphysa.2007.03.150

Cited by 4 publications

(4 citation statements)

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“…This last value is affected by residual correlations. For neutrons emitted in the fusion process this value reached 2 [6]. Motivated by these results, we consider that the method of n-n correlations is also adequate in the fission studies, in order to separate the scission neutrons from the post-scission neutrons.…”

Section: Methodsmentioning

confidence: 97%

“…As it is known the correlation function is very sensitive to the space-time dimension from which the neutrons are emitted. Until now the method of pair momentum correlations of identical particles has been successfully used by us in the investigation of the neutron pair pre-emitted from Boromean halo nuclei [4][5][6]. This method allows to determine the space-time characteristics of the particle pairs source and to distinguish between the post-scission and scission neutrons due to the strength of the n-n correlation function.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of neutron emission by n-n correlation function in fission process using an array detector

Companis

Isbasescu

Mirea

et al. 2010

EPJ Web of Conferences

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Abstract. An experimental set-up designed to investigate the origin of the prompt scission neutrons in fission processes by using an array neutron detector is modeled. Quantities of interest as the correlation function strength in the momentum space within a model of independent one-particle pointlike sources, with a Gaussian distribution for the neutron generation points are obtained in a preliminary investigation. Two working hypothesis are used: i) the scission neutrons are emitted from the neck between fragments, in the final stage of the fission process, and ii) the post-scission neutrons are emitted from the accelerated fission fragments. For the scission neutrons emitted from the neck, a n-n correlation strength significantly larger than that obtained for neutrons emitted from the fission fragments is obtained. The results indicate that it is possible to discriminate scission and post-scission neutrons within an time-of-flight experimental set-up consisting from an array neutron detector combined with a VME acquisition system, using (p,xnf) reactions on actinide targets at the Bucharest Tandem.

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Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Investigation of neutron emission by n-n correlation function in fission process using an array detector

Companis

Isbasescu

Mirea

et al. 2010

EPJ Web of Conferences

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“…26 1842'de "Ölüm Yatağındaki Bir Genç Kız" 27 şiirini yazar ve şiir Curierul De Ambe Sexe dergisinde yayımlanır. 28 Bu şiirle beğeni toplayan D. Bolintineanu, edebiyat dünyasına giriş yapar. 29 Birkaç yıl sonra Bükreş'e yerleşen şair, Aziz Sava Koleji'nin kurslarına katılır.…”

Section: Introductionunclassified

Romanya Heyetinin Sultan Abdülmecid’i Ziyareti (1860) ve Dimitrie Bolintineanu'nun Osmanlı Ülkesi Anlatıları

Budu¹

2022

iuturkiyat

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İnsanoğlu tarih boyunca dünyanın bilinmeyen yerlerini keşfetme, uzak ülkeleri görme, yeni insanlar ve yeni yerleri çeşitli amaçlarla tanıma ve tanıtma ihtiyacı hissetmiştir. Özellikle Batı, Doğu uygarlığını, Doğu da Batı uygarlığını daima merak etmiştir. Bu merakın sonucunda da Batı ve Doğu uygarlıklarında seyahatname türünde birçok eser yazılmıştır. Mevzuya kadim Türkiye-Romanya ilişkileri ekseninde bakıldığında, XIX. yüzyılda Rumen seyyahlar, şairler, yazarlar veya diplomatların birtakım seyahatname, sefaretname ve gezi günlükleri kaleme aldığı görülmektedir. XIX. yüzyılda Romanya'dan Doğu'ya, yani Osmanlı coğrafyasına seyahat eden seyyahların seyahatnameleri, sefaretnameleri ve gezi günlükleri bizlere Doğu'yu detaylıca anlatan önemli eserlerdendir. Bu eserler arasında şair, devlet adamı ve seyyah Dimitrie Bolintineanu'nun Seyahatname'si ve Doğu kültüründen etkilenerek yazdığı Boğaziçi Çiçekleri şiir dizisi öne çıkmaktadır. D. Bolintineanu Seyahatname'sinde Osmanlı coğrafyasını, Doğu'ya seyahat eden çağdaşlarına göre birçok açıdan farklı izlenimlerle aktarmıştır. Bununla birlikte, 1860 yılında İstanbul'a gelen Rumen heyetiyle birlikte Sultan Abdülmecid'e ziyarette bulunan D. Bolintineanu, Seyahatname'sine bunu detaylı bir şekilde kaydetmiştir. Dolayısıyla bu makalede XIX. yüzyılda Osmanlı ülkesine gelen Rumen seyyahlar, D. Bolintineanu'nun Seyahatname'sinde geçen Anadolu seyahati, Rumen heyetinin 1860 yılında Sultan Abdülmecid'e yaptığı ziyaret ve buna bağlı olarak XIX. yüzyılda Romanya-Osmanlı ilişkileri ele alınacaktır.

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“…Besides the applications of two-particle momentum correlation functions to investigate heavy ion collision process, the HBT method is also extended to study exotic structure of nuclei far from the β-stability line due to the rapid development of radioactive nuclear beams. The neutron-neutron correlation functions (C nn ) of Borromean halo nuclei such as 6 He, 11 Li and 14 Be are constructed to extract the size of separation between the two halo neutrons [20][21][22][23][24][25]. In addition, Wei and Ma et al found that the strength of proton-neutron momentum correlation functions at small relative momentum has linear dependence on binding energy per nucleon or single neutron separation energy for light isotope chains [16,26,27].…”

Section: Introductionmentioning

confidence: 99%

Nucleon-nucleon momentum correlation function as a probe of the density distribution of valence neutron in neutron-rich nucleus

Cao,

Cai,

et al. 2012

Preprint

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Proton-neutron, neutron-neutron and proton-proton momentum correlation functions (Cpn, Cnn, Cpp) are systematically investigated for 15 C and other C isotopes induced collisions at different entrance channel conditions within the framework of the isospin-dependent quantum molecular dynamics (IDQMD) model complemented by the CRAB (correlation after burner) computation code. 15 C is a prime exotic nucleus candidate due to the weakly bound valence neutron coupling with closed-neutron shell nucleus 14 C. In order to study density dependence of correlation function by removing the isospin effect, the initialized 15 C projectiles are sampled from two kinds of density distribution from RMF model, in which the valence neutron of 15 C is populated on both 1d5/2 and 2s1/2 states, respectively. The results show that the density distributions of valence neutron significantly influence nucleon-nucleon momentum correlation function at large impact parameter and high incident energy. The extended density distribution of valence neutron largely weakens the strength of correlation function. The size of emission source is extracted by fitting correlation function using Gaussian source method. The emission source size as well as the size of final state phase space is larger for projectiles sampling from more extended density distribution of valence neutron corresponding 2s1/2 state in RMF model. Therefore momentum correlation function can be considered as a potential valuable tool to diagnose the exotic nuclear structure such as skin and halo.

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Experimental state of n-n correlation function for Borromean halo nuclei investigation

Cited by 4 publications

References 14 publications

Investigation of neutron emission by n-n correlation function in fission process using an array detector

Investigation of neutron emission by n-n correlation function in fission process using an array detector

Romanya Heyetinin Sultan Abdülmecid’i Ziyareti (1860) ve Dimitrie Bolintineanu'nun Osmanlı Ülkesi Anlatıları

Nucleon-nucleon momentum correlation function as a probe of the density distribution of valence neutron in neutron-rich nucleus

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