High-resolution study of the 118Sn(d, p)119Sn reaction at 17 MeV

Borello‐Lewin, T.; Orsini, C.Q.; Dietzsch, O.; Hamburger, Ernst Wolfgang

doi:10.1016/0375-9474(75)90188-8

Cited by 27 publications

(8 citation statements)

References 15 publications

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“…The excitation energies in all the tin isotopes found in these reactions generally agreed well with other (often more precise) values reported in the literature (26,27,34) and are quoted to the nearest tenth of an MeV ( k 2 0 keV). Moreover, with few exceptions, the excitation energies given in Table 1, in particular, agree well with these similarly determined by Cavanagh et al at 30 MeV (15) and also with other determinations from one neutron transfer data on the even tin isotopes (16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26). The absolute cross sections have been determined in the manner described above and are given in two forms: the peak angle and its differential cross section as well as a summed cross section in 2" steps from 10 to 50".…”

Section: Resultssupporting

confidence: 90%

“…Several reports of one neutron transfer studies on the Sn isotopes have been published already (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26), but most of these deal with isolated isotopes or just a few isotopes. While such reports are valuable as a consistency check of both experimental cross sections and extracted spectroscopic factors (Sj), there is clearly considerable importance attached to a systematic study, both experimentally and theoretically, over the whole of the Sn isotopic sequence.…”

Section: Introductionmentioning

confidence: 99%

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A 20 MeV (p, d) study of nuclear structure in the even and odd tin isotopes

Fleming¹

1982

Can. J. Phys.

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Thc nuclear structure of the cvcn and odd tin isotopcs has been studied by 20 MeV (p,d) reactions. States strongly populated in thc odd isotopcs arc due to the valcncc neutron shells and cxtcnd up to only 2 MeV of excitation cncrgy; "deep hole" states were not identified. Thc occupation probabilities extracted from finite-range distorted-wave-Born-approxin~ation calculations generally agree well with the predictions of the BCS theory of supcrconducting nuclei, particularly with the calculations of Clcmcnt and Barangcr. In the cvcn tin isotopes. strongly populated states arc characterized predominantly by L = 2 transfers extending up to 4 MeV excitation energy. Thc experimental spectroscopic factors for transitions populating even final states arc comparcd with the BCS calculatcd values of Clement and Baranger, Alzetta and Sawicki, and Van Gunstercn; relatively good agreement is obtained for L = 2 transitions, but not for L = 0 transitions. A considerable fraction of the expected sum iule L = 2 strength in "%n is missing in the ""Sn(p,d)"%n cxpcrimcntal spectrum; in like manner, no 4+ strength could be identified in either "'Sn or IlXSn.La structure nuclCairc des isotopes pairs ct imparis dc I'Ctain a CtC CtudiCc au moyen des rCactions (p,d) ii 20 MeV. Les Ctats fortcmcnt peuplCs, dans Ics isotopes impairs. sont dus aux couchcs de valence dc neutrons ct nc depassent pas 2 MeV d'knergie d'cxcitation; on n'a pas idcntifiC d'etat de "trou profond." Les probabilites d'occupation extraites de calculs effectuks a I'approximation dc Born avcc ondc distorduc et portCe fink sont gCnCralement cn bon accord avec les prCdictions de la thCorie BCS pour des noyaux supraconducteurs. particulikremcnt avec Ics calculs dc Clement et Baranger. Dans le cas des isotopes pairs dc I'Ctain. les Ctats fortcment peuplCs sont caractCrises principalemcnt par des transfcrts L = 2 s'ktcndant jusqu'i 4 MeV d'Cncrgie d'excitation. Lcs valcurs expCrirncntales dcs facteurs spcctroscopiqucs, pour Ics transitions qui peuplent les Ctats finals pairs. sont comparCes avcc lcs valcurs BCS calculCcs par Clcmcnt ct Baranger, par Alzetta ct Sawicki, ainsi que par Van Gunstcrcn: on obticnt un accord rclativerncnt bon pour les transitions L = 2, mais pas pour les transitions L = 0. Une fraction considCrablc de la forcc L = 2 selon la rkgle tlc sornrnation dans IlXSn manque dans le spectre experimental de la reaction 11') ~n (~. d ) "~S n ;dc la ~n&rnc f a~o n , aucunc force 4' n'a pu &tre idcntifibc. ni dans "'Sn, ni dans ""n.[Traduit par le journal]Can.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

A 20 MeV (p, d) study of nuclear structure in the even and odd tin isotopes

Fleming¹

1982

Can. J. Phys.

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“…This information makes our knowledge of the low-energy properties of the whole series of odd Sn isotopes rather complete, because these nuclei have been extensively studied earlier by neutron stripping and pick-up reactions [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. From a theoretical point of view the odd Sn isotopes are interesting, since these single-closed-shell (SCS) nuclei are candidates for a description by means of the BCS or quasiparticle model.…”

Section: Introductionmentioning

confidence: 98%

Number-projected three-quasiparticle description of the odd Sn isotopes

1978

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An account is given of the description of the low-energy properties of the odd Sn nuclei in terms of number projected one-(1 q.p.) and three-quasiparticle (3 q.p.) states. The shell model space for the neutrons consists of one major shell. A simple Gaussian force is used as an effective interaction. Its strength and the single-particle energies, which are the only parameters, are derived in a consistent way from spectroscopic data on the onequasiparticle states. We find that the spectra can be well interpreted in terms of l q.p. and 3q.p. states. Branching ratios of gamma decay, one-nucleon transfer spectroscopic factors, electric and magnetic moments show generally good agreement with the experimental data. For halflives and mixing ratios, which are most sensitive to details of the 3 q.p. components, the agreement is less, but all have the correct order of magnitude.

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“…Theory coupling [1,9,21]. Theory gives a good reproduction of the experimental data [22][23][24][25] ( Fig. 4(b)) in a situation in which the basic states (quasiparticle and vibration) involved in the coupling are present asymptotically, the associated transfer processes making them real.…”

mentioning

confidence: 93%