A new detector array with a large solid angle coverage for the coincidence measurement of charged fragments was developed to study the breakup reaction mechanisms of weakly bound nuclear systems at energies around the Coulomb barrier. The array has been used to explore the breakup reaction mechanisms of <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq1.gif" Format="GIF" Height="12" Rendition="HTML" Resolution="72" Type="Linedraw" Width="17" /> </InlineMediaObject> <EquationSource Format="TEX">$^{6,7}$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mrow> <mn>6</mn> <mo>,</mo> <mn>7</mn> </mrow> </mmultiscripts> </math></EquationSource> </InlineEquation>Li + <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq2.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="19" /> </InlineMediaObject> <EquationSource Format="TEX">$^{209}$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>209</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Bi systems at <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq3.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="42" /> </InlineMediaObject> <EquationSource Format="TEX">$E_\text {beam}$</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>E</mi> <mtext>beam</mtext> </msub> </math></EquationSource> </InlineEquation> = 30, 40, 47 MeV, showing good performance in particle identification and complete kinematic measurements. Based on this, different breakup modes and breakup components were clearly distinguished, and some new breakup modes were discovered, such as <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq4.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="8" /> </InlineMediaObject> <EquationSource Format="TEX">$^7$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>7</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Li <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq5.gif" Format="GIF" Height="6" Rendition="HTML" Resolution="72" Type="Linedraw" Width="21" /> </InlineMediaObject> <EquationSource Format="TEX">$\rightarrow$</EquationSource> <EquationSource Format="MATHML"><math> <mo stretchy="false">→</mo> </math></EquationSource> </InlineEquation> <InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq6.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="14" /> </InlineMediaObject> <EquationSource Format="TEX">$\alpha$</EquationSource> <EquationSource Format="MATHML"><math> <mi>α</mi> </math></EquationSource> </InlineEquation> + t breakup mode in <InlineEquation ID="IEq7"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq7.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="8" /> </InlineMediaObject> <EquationSource Format="TEX">$^{6}$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>6</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Li + <InlineEquation ID="IEq8"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq2.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="19" /> </InlineMediaObject> <EquationSource Format="TEX">$^{209}$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>209</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Bi system and <InlineEquation ID="IEq9"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq4.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="8" /> </InlineMediaObject> <EquationSource Format="TEX">$^7$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>7</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Li <InlineEquation ID="IEq10"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq5.gif" Format="GIF" Height="6" Rendition="HTML" Resolution="72" Type="Linedraw" Width="21" /> </InlineMediaObject> <EquationSource Format="TEX">$\rightarrow$</EquationSource> <EquationSource Format="MATHML"><math> <mo stretchy="false">→</mo> </math></EquationSource> </InlineEquation> <InlineEquation ID="IEq11"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq11.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="8" /> </InlineMediaObject> <EquationSource Format="TEX">$^6$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>6</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>He + p breakup mode in <InlineEquation ID="IEq12"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq12.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="8" /> </InlineMediaObject> <EquationSource Format="TEX">$^{7}$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>7</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Li + <InlineEquation ID="IEq13"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1783_Article_IEq2.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="19" /> </InlineMediaObject> <EquationSource Format="TEX">$^{209}$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>209</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Bi system. This array can also be used to explore other breakup reaction mechanisms induced by weakly bound nuclei.

STARE: a new detector array for exploring the breakup reaction mechanisms induced by weakly bound nuclei

期刊论文
发表日期：

2025年8月21日

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Yan-Song Wu,
Gao-Long Zhang,
Cheng-Jian Lin,
Nan-Ru Ma,
Lei Yang,
Guang-Xin Zhang,
Shi-Peng Hu,
Huan-Qiao Zhang,
Marco Mazzocco,
Yong-Jin Yao,
Zhen-Wei Jiao,
Ming-Li Wang,
Xue-Dou Su,
Hao-Bo Lv,
Kun Dong

摘要

A new detector array with a large solid angle coverage for the coincidence measurement of charged fragments was developed to study the breakup reaction mechanisms of weakly bound nuclear systems at energies around the Coulomb barrier. The array has been used to explore the breakup reaction mechanisms of $^{6,7}$ $^{6, 7}$ Li + $^{209}$ $^{209}$ Bi systems at $E_\text {beam}$ $E_{beam}$ = 30, 40, 47 MeV, showing good performance in particle identification and complete kinematic measurements. Based on this, different breakup modes and breakup components were clearly distinguished, and some new breakup modes were discovered, such as $^7$ $^{7}$ Li $\rightarrow$ $\to$ $\alpha$ $α$ + t breakup mode in $^{6}$ $^{6}$ Li + $^{209}$ $^{209}$ Bi system and $^7$ $^{7}$ Li $\rightarrow$ $\to$ $^6$ $^{6}$ He + p breakup mode in $^{7}$ $^{7}$ Li + $^{209}$ $^{209}$ Bi system. This array can also be used to explore other breakup reaction mechanisms induced by weakly bound nuclei.