Gamma spectroscopy group
INFN-LNL
INFN INFN INFN

γ -spectroscopy group

Laboratori Nazionali di Legnaro

The Gamma Spectroscopy group performs nuclear structure studies using stable beams provided by the PIAVE-ALPI-TANDEM accelerators of Legnaro National Laboratory, and high-resolution Ge arrays coupled to different ancillary detectors. The group works in close collaboration with the "Galileo Galilei" physics department of the University of Padova and INFN-Padova. Furthermore, the group belongs to the GAMMA collaboration for nuclear physics. This collaboration is part of the INFN - National Scientific Committee 3 (CSN3) initiative, which involves 5 INFN divisions: INFN - Laboratori Nazionali di Legnaro (LNL), INFN - Sezione di Firenze (FI), INFN - Sezione di Milano (MI), INFN - Sezione di Padova (PD), and the University of Camerino .

The group is also involved with SPES , which is a next generation ISOL-type accelerator that together with the operation of existing machines, is the future of LNL. SPES will provide Radioactive Ion Beam for nuclear physics and astrophysics research, as well as for interdisciplinary applications.

Currently, the GALILEO array is being employed to detect γ radiation emitted after reactions such as fusion-evaporation, and low-energy Coulomb excitation. At the moment, preparations are being made to host the AGATA array in 2022. You can find more information on the installation of AGATA@LNL below

The physics program of the group includes the following topics:

In addition to the local activities, the group also performs research in collaboration with different laboratories such as GANIL , ISOLDE, JYU, the RIKEN Nishina Center , and GSI which is at the moment evolving into FAIR .

GALILEO


GALILEO (Gamma Array of Legnaro INFN Laboratories for nuclEar spectrOscopy) is the current high-resolution Ge array for advanced in-beam γ-ray spectroscopy studies constructed and installed at LNL.

The first phase of GALILEO was operational between 2015 and 2019 and consisted of 25 GASP tapered detectors coupled to Neutron Wall as shown in the picure. In a second stage of this phase, 10 GASP detectors were moved to the forward angles (replacing Neutron Wall) and LaBr3 detectors were mounted at 90° to optimize the setup for measurements using the Plunger.

In its second phase, GALILEO will consist of 25 GASP tapered detectors at 90° and forward angles, and 10 triple clusters built using capsules of EUROBALL, mounted at backward angles. At the moment 20 GASP detectors and one triple cluster are mounted in the structure. Keep updated on the progress of the array following the latest news.

The HPGe detectors are surrounded by anti-Compton shields in order to reach, for the whole array, a peak-to-total ratio of about 55%. A 5 cm thick heavy-metal shield improves Compton rejection, avoiding direct γ-ray interactions in the BGO shields. The geometry of the array is designed to maximize the photo-peak efficiency under typical in-beam medium-high γ-ray multiplicity conditions, achieving a value of 6.4%. GALILEO can be coupled to different ancillary devices.

Check out the list of GALILEO physics publications , or take a look at some of the technical publications . You can also see previous thesis regarding GALILEO or its ancillary devices.

A full list of the experiments approved and performed with GALILEO can be found here

The GALILEO array coupled to NeutronWall
The GALILEO array
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AGATA@LNL


The AGATA array will be mounted at LNL from December 2021. Stay tuned for more information.

Under construction

Ancillary devices.


Some of the ancillary devices which can be coupled to GALILEO (and AGATA) are:

  • A dedicated Plunger device for lifetime measurements with GALILEO.
  • EUCLIDES: A highly-efficient light-charged-particle detector
  • SPIDER: A Silicon PIe DEtectoR for low-energy Coulomb-excitation measurements
  • TRACE: A pixel-type Si TRacking Array for light Charged particle Ejectiles
  • LaBr3 detectors
  • NEDA: A NEutron Detector Array
  • Neutron Wall: The EUROBALL neutron wall
  • The Recoil Filter Detector (RFD)
The GALILEO plunger
The EUCLIDES detector
The SPIDER detector

News.


16 October 2020: S. Guo, C. M. Petrache, D. Mengoni, et al.
Pseudospin partner bands in 130Ba
Phys. Rev. C 102, 044320 (2020)

21 September 2020: S. M. Lenzi, A. Poves, and A. O. Macchiavelli
Isospin symmetry breaking in the mirror pair 73Sr - 73Br
Phys. Rev. C 102, 031302 (2020)

7 August 2020: J. Bradbury, D. Testov, S. Bakes, et al.
Lifetime measurements using a plunger device and the EUCLIDES Si array atthe GALILEO γ-ray spectrometer
Nucl. Instrum. Methods. Phys. Res. A 979, 164345 (2020)

30 July 2020: Installation of the first new triple cluster detector from GALILEO
The first new triple detector from GALILEO was mounted with its anti-Compton shield.
The detector is composed of three hyper-pure Germanium crystals installed inside a single cryostat specially developed for GALILEO.
The installation of other detectors is scheduled for autumn 2020 and will allow to increase the detection efficiency of the array.
description here

28 July 2020: A. Gottardo, G. de Angelis, P. Doornenbal, et al.
Transition strengths in the neutron-rich 73,74,75Ni isotopes
Phys. Rev. C 102, 014323 (2020)

22 July 2020: M. Siciliano, I. Zanon, A. Goasduff, et al.
Shape coexistence in neutron-deficient 188Hg investigated via lifetime measurements
Phys. Rev. C 102, 014318 (2020)

People


The group if INFN-LNL works in close collaboration with the group of the University of Padova and INFN-Padova.

Staff:

Giacomo
Giacomo de Angelis
giacomo.deangelis @
lnl.infn.it

Researcher

INFN-LNL

Alain
Alain Goasduff
alain.goasduff @
lnl.infn.it

Researcher

INFN-LNL

Daniel
Daniel R. Napoli
napoli @
lnl.infn.it

Researcher

INFN-LNL

Andrea
Andrea Gottardo
andrea.gottardo @
lnl.infn.it

Researcher

INFN-LNL

Jose Javier
Jose Javier Valiente Dobon
javier.valiente @
lnl.infn.it

Researcher

INFN-LNL

Dino
Dino Bazzacco
dino.bazzacco @
pd.infn.it

Researcher

University of Padova

Silvia
Silvia Lenzi
silvia.lenzi @
pd.infn.it

Professor

University of Padova

Roberto
Roberto Menegazzo
roberto.menegazzo @
pd.infn.it

Researcher

INFN-Padova

Daniele
Daniele Mengoni
daniele.mengoni @
pd.infn.it

Researcher

University of Padova

Francesco
Francesco Recchia
francesco.recchia @
pd.infn.it

Researcher

University of Padova

Postdocs:

Liliana
Martha Liliana Cortes
liliana.cortes @
lnl.infn.it

Postdoc

INFN-LNL

Rosa
Rosa Maria Pérez Vidal
perezvidal @
lnl.infn.it

Postdoc

INFN-LNL

Guanxin
Guangxin Zhang
guangxin.zhang @
pd.infn.it

Postdoc

University of Padova

Jeongsu
Jeongsu Ha
jeongsu.ha @
pd.infn.it

Postdoc

University of Padova

PhD students:

DanieleB
Daniele Brugnara
daniele.brugnara @
lnl.infn.it

Student

University of Padova.
Supervisor: Jose Javier Valiente

Rafael
Rafael Escudeiro
rafael.escudeiro @
pd.infn.it

Student

University of Sao Paulo / University of Padova
Supervisor: Nilberto Heder Medina/ Francesco Recchia

Giorgia
Giorgia Pasqualato
giorgia.pasqualato @
lnl.infn.it

Student

University of Padova
Supervisor: Daniele Mengoni

Sara
Sara Pigliapoco
sara.pigliapoco @
studenti.unipd.it

Student

University of Padova
Supervisor: Francesco Recchia

Irene
Irene Zanon
irene.zanon @
lnl.infn.it

Student

University of Ferrara
Supervisor: Diego Bettoni


Former members:


Eleonora
Eleonora Gregor
Postdoc
INFN-LNL
Dmitry
Dmitry Testov
Postdoc
University of Padova
Andres
Andres Illana Sisón
Postdoc
INFN-LNL
Gzez
Grzegorz Jaworski
Postdoc
INFN-LNL

Thesis projects


The group offers different thesis projects for bachelor, master and PhD thesis.
Below you can find some of the possible topics for your thesis. Contact the corresponding supervisor if you are interested!

  • Bachelor thesis
  • Lifetime measurements with plunger. Supervisor: Alain Goasduff
  • Master thesis
  • Test of Silicon detectors. Supervisor: Daniele Mengoni

Publications



Here you can find a list of:


Visiting LNL.


  • If you would like to propose an experiment, check the Useful links section
  • If you are planning to come to LNL for experiments or collaboration, you first need to register as LNL user. You can find some FAQ here
  • If you would like to book the LNL- Guesthouse, follow this procedure
  • You might also want to check:

Internal


Maintained by: Martha Liliana Cortes