The

For the first time in an application to nuclear astrophysics, a process induced by the unstable $$^5$$He = ($$^4$$He-n) nucleus, the $$^3$$He+$$^5$$He$$\rightarrow$$2$$\alpha$$ reaction, has been studied through the Trojan Horse Method (THM). For that purpose, the quasi-free (QF) contribution of the $$^9$$Be($$^3$$He,$$\alpha \alpha$$)$$^4$$He reaction was selected at $$E_{^{3}\text{ He }}=4$$ MeV incident energy. The reaction was studied in a kinematically complete experiment following a recent publication (Spitaleri et al. in Eur Phys J A 56:18, 2020), where for the quasi free contribution the momentum distribution between $$\alpha$$ and $$^5$$He particle cluster in the $$^9$$Be nucleus in the ground state have been extracted. The angular distribution of the QF $$^3$$He+$$^5$$He$$\rightarrow$$2$$\alpha$$ reaction was measured at $$\theta _{cm}$$ = 78$$^{\circ }$$–115$$^{\circ }$$. The energy dependence of the differential cross section of the $$^3$$He+$$^5$$He$$\rightarrow$$2$$\alpha$$ virtual reaction was extracted in the energy range $$E_{cm}$$ = 0–650 keV. The total cross section obtained from the Trojan-horse method was normalized to absolute cross sections from a theoretical calculation in the energy range $$E_{cm}$$ =300–620 keV

A new Time-of-flight detector for the R3^3B setup

International audienceWe present the design, prototype developments and test results of the new time-of-flight detector (ToFD) which is part of the R$^3$B experimental setup at GSI and FAIR, Darmstadt, Germany. The ToFD detector is able to detect heavy-ion residues of all charges at relativistic energies with a relative energy precision $\sigma _{\varDelta E}/{\varDelta E}$ of up to 1% and a time precision of up to 14 ps (sigma). Together with an elaborate particle-tracking system, the full identification of relativistic ions from hydrogen up to uranium in mass and nuclear charge is possible

A new Time-of-flight detector for the R 3 B setup

© 2022, The Author(s).We present the design, prototype developments and test results of the new time-of-flight detector (ToFD) which is part of the R3B experimental setup at GSI and FAIR, Darmstadt, Germany. The ToFD detector is able to detect heavy-ion residues of all charges at relativistic energies with a relative energy precision σΔE/ ΔE of up to 1% and a time precision of up to 14 ps (sigma). Together with an elaborate particle-tracking system, the full identification of relativistic ions from hydrogen up to uranium in mass and nuclear charge is possible.11Nsciescopu