India information (H.J. Wollersheim)

India Information

Inter University Accelerator Centre: (Nuclear Science Centre)

IUAC Delhi
GSI
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Charge state for S	Energy	Current
11+	150 MeV	0.5 pnA
10+	137 MeV	1-2 pnA
9+	125 MeV	1-2 pnA

Charge state for Ni	Energy	Current
13+	175 MeV	0.5 pnA
12+	162 MeV	1.0 pnA
11+	150 MeV	2.0 pnA

Recoil distance measurement (2005)

Memorandum of Understanding
Letter of Intent
Proposal (ppt-presentation)
- J.G. Pronko et al., Phys.Rev. C9 (1974), 1430 Gamma-ray spectroscopy studies of ⁵²Ti
- B.A. Brown et al., Phys.Rev. C14 (1976), 1016 Lifetimes of yrast states in ^51,52Ti and ⁵²V
- D.C. Dinca et al., Phys.Rev. C71 (2005), 041302 Reduced transition probabilities to the first 2⁺ state in ^52,54,56Ti and development of shell closures at N=32,34
- D.C. Dinca: Neutron-rich Ti isotopes and possible N=32 and N=34 shell gaps
- K. Andgren et al., Phys.Rev.C71,014312 Lifetime measurements of normal deformed states in ¹⁶⁵Lu
- R.V.F. Janssens et al., Phys.Lett. B546 (2002), 55 Structure of ^52,54Ti and shell closures in neutron-rich nuclei above ⁴⁸Ca
- O. Niedermaier: Exploring the 'island of inversion': Coulomb excitation of the neutron-rich Mg isotopes ³⁰Mg and ³²Mg
⁴⁸Ca-target: Au(2mg/cm²), Ca(0.5mg/cm²), Au(0.1mg/cm²)
Characteristics of isotope-enriched ⁴⁸Ca material
R.K. Bhowmik (7693), S. Muralithar (7660), R.P. Singh (7612), R. Kumar (7508 Mob.:9871102213), S.C. Pancholi, S. Mandal (Mob.:9868789924), H.J. Wollersheim, P. Doornenbal, Abhilash (RA), Ranjit (RD), Dinesh (DN), Anukul (AD)
3 μm/ps

Parallel plate avalanche counter (IUAC-2005)

annular PPAC detector (IUAC)
annular PPAC detector (GSI)
gas pressure: 13hPa (10Torr), high voltage: 700V for HIs
CFD-settings for segmented anode: fraction=0.2, delay=6ns
CFD-settings for delay line: fraction=0.4, delay=18ns
literature
- H.Stelzer; Nucl.Phys. A354 (1981),433 Some recent developments in nuclear charged particle detectors
- H.Stelzer; Lecture notes in physics, vol.178, Berlin (1983) Gas filled heavy ion detectors
1.5nF, 330kOhm

Coulomb excitation of ^114,116Sn (X7-2006)

Proposal: Coulomb excitation of ^112,114,116Sn and ^120,122Te
- Proposal presentation at GSI
- DPG spring meeting 2007 P.Doornenbal: Coulomb excitation of ^114,116Sn
P. Doornenbal et al., Phys.Rev.C78 2008, 031303: Enhanced strength of the 2⁺ → 0⁺ transition in ¹¹⁴Sn studied via Coulomb excitation in inverse kinematics
A.Banu et al., Phys.Rev.C72 2005, 061305: ¹⁰⁸Sn studied with intermediate-energy Coulomb excitation
- F.Nowacki: Shell model description of correlations in ⁵⁶Ni and ¹⁰⁰Sn
- K.Sieja: Core excitations on semi-magic Ni and Sn nuclei
R. Kumar et al., Phys.Rev.C81 2010, 024306 Enhanced 0⁺ → 2⁺ E2 transition strength in ¹¹²Sn
literature
- P.H. Stelson et al., Phys.Rev. C2 (1970), 2015: Static quadrupole moment of the first 2⁺ states of the even tin nuclei
- R. Graetzer et al., Phys.Rev. C12 (1975), 1462: Quadrupole moments of 2⁺ states of even tin nuclei
- A.M. Kleinfeld et al., Nucl.Phys. A154 (1970), 499: Reorientation measurements in ¹¹⁶Sn and ¹²⁴Sn
- J.N. Orce et al., Phys.Rev. C76 (2007), 021302: 2 → 0 transition strengths in Sn nuclei
- J.N. Orce et al., Phys.Rev. C77 (2008), 029902: Erratum: 2 → 0 transition strengths in Sn nuclei
- C. Vaman et al., Phys.Rev.Lett. 99 (2007), 0162501: Z=50 shell gap near ¹⁰⁰Sn from intermediate-energy Coulomb excitations in even-mass ^106-112Sn isotopes
- J. Cederkäll et al., Phys.Rev.Lett. 98 (2007), 172501: Sub-barrier Coulomb excitation of ¹¹⁰Sn and its implication for the ¹⁰⁰Sn shell closure
- A. Ekström et al., Phys.Rev.Lett. 101 (2008), 012502: 0⁺ → 2⁺ transition strength in ¹⁰⁶Sn and ¹⁰⁸Sn
- I. Talmi, Nucl Phys A172 (1971) 1: Generalized seniority and structure of semi-magic nuclei
- A.Ansari, Phys.Lett.B623 (2005), 37: Study of the lowest lying 2⁺ excitation and B(E2) transition strengths in relativistic QRPA for Sn and Pb-isotopes
- A.Ansari, Phys.Rev.C 74 (2006), 054313: Lowest lying 2⁺ and 3^- vibrational states in Pb,Sn, and Ni isotopes in relativistic quasiparticle random-phase approximation
- J.A.Pinston et al., J. Phys. G30 (2004) R57: Microsecond isomers in the magic regions ⁷⁸Ni and ¹³²Sn
- R. Broda et al., Phys.Rev.Lett. 68 (1992) 1671: Yrast isomers in tin nuclei from heavy ion collisions and the h_11/2 subshell filling
- T. Yamazaki et al., Nucl Phys A134 (1969) 81: Level and isomer systematics in even tin isotopes from ¹⁰⁸Sn to ¹¹⁸Sn observed in Cd(α,xn) reactions

Coulomb excitation of ^112,116Sn (IUAC-2008)

Proposal: Coulomb excitation of ^112,116Sn
- Presentation by Dr. R.K.Bhowmik
- Presentation by H.J. Wollersheim (IUAC 2009)
R. Kumar et al., Phys.Rev.C81 2010, 024306 Enhanced 0⁺ → 2⁺ E2 transition strength in ¹¹²Sn
- experiment preparation October 2008
- experiment analysis November 2009
R. Kumar et al., Acta Phys. Pol. B (2010) Enhanced 0⁺ → 2⁺ E2 transition strength in ^112,114Sn
- M.Saha Sarkaret al., NIM A491 (2002),113 Characteristics of a Compton suppressed Clover detector up to 5MeV
- G. Duchene et al., NIM A432 (1999),90 The Clover: a new generation of composite Ge detectors

Coulomb excitation of ^120,122Te (IUAC-2013)

Proposal: Coulomb excitation of ^120,122Te
- Presentation by Dr. R.Kumar
target certificate
A.Stolarz: target details
- Nucl.Instr.Meth A480 (2002)36 Centrifugal extraction of highly enriched ¹²⁰Te and ¹²²Te using the non-steady state method separation
- Phys.Rev.C84 (2011) 041306 Lifetime measurement of the first 2+ state in ¹⁰⁸Te
- Phys.Scr. T150 (2012) 014003 The B(E2) systematics of Sn and Te isotopes in light of data in the light Sn region including a recent measurement in ¹⁰⁸Te using the combined recoil-decay-tagging-recoil-distance Doppler technique
- Phys.Rev.C71 (2005) 064324 E2 transition probabilities in ¹¹⁴Te: A conundrum
- thesis by F.Corminboeuf Study of ¹¹⁰Cd using the (n,n) reaction and ¹¹⁴Te using the (alpha,2n)reaction
- Eur.Phys.J.A13 (2002) 435 Lifetime in the ground state band and the structure of ¹¹⁸Te
- Precision lifetime measurement of 2+ state in ¹²⁰Te
- Phys.Rev.C71 (2005)034307 Intruder structures observed in ¹²²Te through inelastic neutron scattering
- Phys.Rev.Lett. 88 (2002) 222501 Coulomb excitation of radioactive ^132,134,136Te beams and the low B(E2) of ¹³⁶Te
- Korten, Zielinska, Clement (ppt) Coulomb excitation of neutron-rich Sn, Te and Xe isotopes beyond N=82
- Phys.Rev.C37 (1988)2881 Magnetic moments of the first excited 2+ states of the even-even Te isotopes
- Nucl.Phys. A261 (1976)498 Reorientation effect measurement of ¹²²Te and ¹³⁰Te
- Phys.Rev.C10 (1974)1166 Investigation of the reorientation effect on ^{122,124,126,128,130}Te
- J. Phys. G: Nucl. Phys. 3 (1977)507 Quadrupole moments of the first 2⁺ states of doubly even nuclei in the Z=50 region
- thesis by R.G.Stokstad The measurement of static electric quadrupole moments of excited nuclear states by Coulomb excitation
- Phys.Rev.C78 (2008)054320 Fragmentation of mixed-symmetry excitations in stable even-even tellurium nuclei
- Acta Physica Hungarica A12 (2000) 287 Coexisting structures in the 120-124Te nuclei
- Phys.Rev.C66 (2002) 054313 Anomalous behavior of 2+ excitations around ¹³²Sn (QRPA)
- Phys.Rev.C70 (2004) 054313 Anomalous properties of quadrupole collective states in ¹³⁶Te and beyond (SM)
- Nucl.Phys. A231 (1974)141 Structure and electromagnetic properties of the doubly even Te isotopes (theory)
- J. Phys. G: Nucl. Phys. 13 (1987)161 An application of the dynamic deformation model to the tellurium isotopes (theory)
- Nucl. Phys. A786 (2007)47 Signs of dynamical effects for Cd, Sn, Te, Xe, Ba and Sm nuclear charge radii (theory)
- single particle level schemes for Tellurium

useful programs:

non-relativistic kinematic program (FORTRAN): kinemat.f ⁵⁸Ni+¹¹⁶Sn, E=175MeV output: fort.21
⁵⁸Ni+¹¹²Sn at 175MeV
SATAN/GRAF input: test.GRF
commands: GR, GD, GCOPY, GD, GCOPY/DSN(Z:\ .ps)
Northcliffe and Schilling: Nucl.Data Tables 7 (1970), 233 Range and stopping power tables for heavy ions
Doppler shift program (FORTRAN): doppler.f ⁵⁸Ni+¹¹²Sn, E=175MeV
OUTPUT1.GRF OUTPUT2.GRF OUTPUT3.GRF OUTPUT4.GRF

Coulomb excitation and decay program

Fortran code	input	input	output	output
lell30e1.f	input		output	anggro
angint.f	INPUTang	anggro	OUTPUT
anggro.f	input	coulex	output

Transient magnetic field measurement: (GSI-2010)

Proposal: Measurements of the g-factors of the 2⁺ states in the stable ^112,114,116Sn isotopes using the transient field technique
M.C. East et al, g-factor in ^116,118,120Sn: Sensitivity to configurations near the Fermi surface
Int.Conf.on current problems in nucl. physics and atomic energy, Kyiv 2008
DPG spring meeting 2008: J. Leske: Kernstrukturuntersuchungen an radioaktiven Isotopen mit Hilfe von Alpha-Transfer-Reaktionen
UNILAC proposal: J. Leske: On the track of the one-phonon mixed symmetry state in radioactive ⁹⁰Sr
UNILAC proposal: J. Leske: Properties of the one-phonon MSS in ¹⁴⁰Ba from an alpha-transfer reaction
M.Hass et al, Phys.Rev.C22 (1980),97 Magnetic moments of the 2⁺ levels in even Sn isotopes
A. Jungclaus et al, Phys.Lett. B (2010) Evidence for reduced collectivity around the neutron mid-shell in the stable even-mass Sn isotopes from new lifetime measurements

Electronic test (GSI-2005)

Technical Report on Clover Electronics Module
1 2 3 4 5 6 7 8 9
Technical Report on Spectroscopy Amplifier
1 2 3 4
Technical Report on Timing Filter Amplifier and Constant Fraction Discriminator (TFA+CFD)
1
Technical Report on Anti-Coincidence Logic Unit
1 2 3 4 5 6 7 8
time spectra (Murali)
Super Clover Detector N^o1
P. Queiroz: Testing of the NSC Electronics Module with the GSI Clover Detector
Rakesh Kumar: Testing of the NSC Electronics Module with the GSI Clover Detector

	INGA at IUAC
	S.Muralithar et al., NIM A 622 (2010), 281 Indian National Gamma Array at Inter University Accelerator Centre, New Delhi

	Active Stopper for RISING: (GSI-2006)
	R. Kumar et al., NIM A598 (2009) 754 Testing of a DSSSD detector for the stopped RISING project R. Kumar et al. A double-sided Si-strip detector as active stopper (report) Presentation by Rakesh Kumar (Sept. 26,2006)

Transfer Experiment: (IUAC-2010)

Proposal: Investigation of fusion and few-nucleon transfer
- Annax-I
S. Kalkal et al.: Channel coupling effects on the fusion excitation functions for ²⁸Si+^90,94Zr in sub and near barrier regions
S. Kalkal et al.: Multinucleon transfer reactions for the ²⁸Si+^90,94Zr systems in sub and near barrier region
Experiment Preparation (IUAC 2010)
- Presentation by H.J.Wollersheim (IUAC 2010)
- Presentation by H.J.Wollersheim (Delhi University 2010)

nuclear mass A_i R_i [fm] C_i [fm] R_int [fm] R_fu [fm]

²⁸Si 3.39 3.10 - -

⁹⁰Zr 5.15 4.96 11.28 10.11

⁹⁴Zr 5.24 5.04 11.35 10.18

Diabolic Pair Transfer:

Proposal: Search for diabolic pair transfer at high angular momentum states by using heavy-ion induced reaction
GPAC-presentation
literature
- Y.R. Shimizu, Nucl.Phys. A520 (1990), 477: How can we tell the transition from the superconducting to the normal phase?
- R.S. Nikam et al., Phys.Lett. B185 (1987),269: A nuclear squid: Diabolic pair transfer in rotating nuclei
- L.F. Canto et al., Phys.Lett. B192 (1987), 4: On the possibility of observing experimentally diabolic pair transfer in rotating nuclei
- R.S. Nikam et al., Phys.Rev.Lett. 58 (1987), 980: Manifestation of the berry phase in diabolic pair transfer in rotating nuclei
- G. Eckert et al., Z.Phys. A343(1992),267: Inelastic scattering and nucleon transfer in the system ²³²Th+²⁰⁶Pb near the Coulomb barrier
- I. Peter et al., Eur.Phys.J. A16 (2003), 509: Enhanced neutron pair transfer and collective excitations in the system ²⁰⁶Pb+¹¹⁸Sn at barrier energies

Visitors since July 2005:

last update: 1.7.2005 Hans-Juergen Wollersheim HJW