T. Suda

Measurement of the reaction cross section of (18)C and observations of fragments from (17)C and (18)C at 80A MeV

The one- and two-neutron removal reactions from (17)C and (18)C as well as the reaction cross section of (18)C have been studied using a carbon target at 80A MeV. The longitudinal momentum distributions of (15,16)C fragments from (17)C and (16,17)C fragments from (18)C were measured by a direct time-of-flight method. The width of (15)C fragments from (17)C is fairly smaller than that from other C isotopes. The experimental data are discussed within the framework of the Glauber model.

Search for {sup 7}H in {sup 2}H+{sup 8}He collisions

An experimental search for the low-lying {sup 7}H resonance was performed with the {sup 2}H({sup 8}He{sup 3}He){sup 7}H reaction studied at forward center-of-mass angles (6 deg. - 14 deg.) with a 42 A MeV {sup 8}He beam. No well-pronounced peak of {sup 7}H was observed; however, the obtained spectrum was found to have a peculiarity at approx2 MeV above the t+4n threshold. The data allow us to set a c.m.s. cross section level of approx30 mub/sr for the low-energy part of the {sup 7}H spectrum. The test reaction {sup 2}H({sup 12}Be{sup 3}He){sup 11}Li, involving the same one-proton (d,{sup 3}He) transfer, was studied simultaneously on a 71 A MeV satellite beam where a cross section of approx =1 mb/sr was measured for the population of the {sup 11}Li ground state.

Search for 7Hat RIKEN

Experimental search for the low-lying {sup 7}H resonance was performed in the d({sup 8}He,{sup 3}He){sup 7}H reaction with a {sup 8}He beam at 42A MeV. No well-pronounced peak of {sup 7}H was observed, but the spectrum has some peculiarities at approx2 MeV and approx10.5 MeV above the t+4 n threshold. The d({sup 12}Be,{sup 3}He){sup 11}Li reaction simultaneously measured at 71A MeV showed the population of {sup 11}Li ground state with the c.m.s. cross section of approx =1 mb/sr.

Search for [sup 7]H at RIKEN

Experimental search for the low-lying {sup 7}H resonance was performed in the d({sup 8}He,{sup 3}He){sup 7}H reaction with a {sup 8}He beam at 42A MeV. No well-pronounced peak of {sup 7}H was observed, but the spectrum has some peculiarities at approx2 MeV and approx10.5 MeV above the t+4 n threshold. The d({sup 12}Be,{sup 3}He){sup 11}Li reaction simultaneously measured at 71A MeV showed the population of {sup 11}Li ground state with the c.m.s. cross section of approx =1 mb/sr.

Search for 7H at RIKEN

Experimental search for the low-lying {sup 7}H resonance was performed in the d({sup 8}He,{sup 3}He){sup 7}H reaction with a {sup 8}He beam at 42A MeV. No well-pronounced peak of {sup 7}H was observed, but the spectrum has some peculiarities at approx2 MeV and approx10.5 MeV above the t+4 n threshold. The d({sup 12}Be,{sup 3}He){sup 11}Li reaction simultaneously measured at 71A MeV showed the population of {sup 11}Li ground state with the c.m.s. cross section of approx =1 mb/sr.